1
Understanding Research Assignment #5
Experimental Design
Instructions:
Reading research for the first time can be difficult. Even as a professor who has read a lot of
research over the years, I often have to read the article more than once for it all to click. So don't
be concerned that you are having to read slowly, carefully, and more than once -- that's normal.
Psychology is a science based on research and this class is about the methods scientists use to
conduct research, so it's good for students to read actual studies. Read the study and attempt to
answer the questions on your own first.
Please write your responses in blue font so that it is easier for me to grade.
A.
Variables
1.
Identify the independent variable and the dependent variable for an experimental study.
For a non-experimental study, what were the variables of interest? (What were the levels
of the independent variable – there has to be at least two. The IV = the variable that
differs between the groups. It is often the treatment. The DV = what the experimenters
used to determine if the IV had an effect. These are often formal assessments.)
a.
IV =
b.
DV =
OR for non-experimental research designs
c.
The variables of interest =
2.
Summarize the statement of the problem. (This is the researcher’s justification of the
why the experiment is needed. Typically, this will be in the Introduction.)
3.
Identify the research question (The hypothesis. This should be a question. What did the
experimenter’s want to know? The title of the article can be a shortened version of the
research question. Typically, the research question is in the Introduction.)
B.
Method Section
1.
Summarize the Method Section. (Read the entire Method Section. You should describe
what happened to the participants at the start of the study, the treatment, and the end of
the study.)
2
C.
Research Design
1.
Identify the research design. (First, identify the overall category. Was this a descriptive
study? A correlational study? An experimental study? A quasi-experimental study? A
single-subject design?) Once you have identified the overall category, you need to
specify the exact type. For example, “This was a descriptive study and used naturalistic
observation.”
a.
Type of research =
b.
Specific research design =
D.
Results/Discussion
1.
How were the results recorded? Did the authors use a table or figure? If so, what was in
it? What formal tests did they use to measure the variables? For example, “The
researchers used the Vinland Adaptive Behavior Scales to measure the participants
overall level of functioning in daily life and the pre and post scores were displayed in a
table.) If applicable, what statistical tests were used? (Was it a t-test? An ANOVA?)
2.
Summarize the results. (Read the entire Results section. What happened?)
3.
What is a conclusion you can take from the study? (What is the take-home message from
this study? How can the findings be used by non-researchers?)
4.
Based on reading this study, what is a needed, future research topic? (Hint: many
authors towards the end of the Discussion section talk about their view of needed future
research. You can use one of theirs or a research question that is your own.)
Behavioral Interventions
Behav. Intervent. 31: 12–27 (2016)
Published online 28 August 2015 in Wiley Online Library
(wileyonlinelibrary.com) DOI: 10.1002/bin.1424
USING VIDEO FEEDBACK TO IMPROVE MARTIAL
ARTS PERFORMANCE
Angela BenitezSantiago and Raymond G. Miltenberger*
Child and Family Studies, University of South Florida, Tampa, FL, USA
This study used video feedback to enhance the martial arts performance of capoeira, an Afro-Brazilian
martial art that utilizes acrobatic movements (revesado, au de costa, and macaco). A multiple baseline
across behaviors was used for five participants where baseline conditions consisted of standard
coaching. The intervention consisted of video feedback, in which the participants were filmed attempting
a movement and immediately viewed the video afterwards, while receiving positive and corrective
feedback from the instructor. The target behaviors were scored on a 15-item checklist, resulting in a
percentage correct. A second video feedback condition similar to the first was also introduced to some
participants, in which participants practiced the movements with live feedback before being filmed
again. Results show that the video feedback conditions increased performance over baseline in most
cases. Copyright © 2015 John Wiley & Sons, Ltd.
The use of video for feedback allows the benefit of preserving an audiovisual
image of a performance, the ability to replay it at various speeds, and to stop or
‘freeze’ an image in time. Video recording has been used in two ways in the skill
leaning process: first as feedback on a performance that has been completed and
second to display a model of the correct performance to be completed (Dowirck,
1991). Research that has used video feedback to improve a performance has targeted
peer interactions (Dunlap et al., 1992), parent training (Phaneuf & McIntyre, 2007),
medical teaching (Nilsen & Baerheim, 2005; Roter et al., 2004), social communication (Baily, Deardorff, & Nay, 1977; O’Reilly et al., 2005; Thiemann & Goldstein,
2001), performance in work settings (Sigurdsson, & Austin, 2008), and performance
in sports such as swimming (Hazen, Johnstone, Martin, & Srikameswaran, 1990),
gymnastics (Boyer, Miltenberger, Batsche, & Fogel, 2009), soccer (Zeigler, 1994),
and tennis (Scott, Scott, & Howe, 1998).
An athlete can acquire proficiency in the performance of a skill through the
automatic reinforcement of successful outcomes of the behavior (e. g., a successful
*Correspondence to: Raymond G. Miltenberger, Child and Family Studies, University of South Florida, Tampa, FL,
USA. E-mail: miltenbe@usf.edu
Copyright © 2015 John Wiley & Sons, Ltd.
Video feedback in martial arts performance
13
soccer pass and a strike thrown by a pitcher) or through feedback provided about the
performance (Dowrick, 1991). Feedback can be provided immediately after the
performance or later through video. Dowrick (1991) suggests that video feedback
should be provided by a coach who can draw the athlete’s attention to the important
components of the performance. When using video, coaches should identify the
critical elements of successful athletic performance and provide feedback about
those critical elements. Few studies have evaluated video feedback with sports’
performance.
Hazen et al. (1990) compared standard behavioral coaching with an individual
feedback and a group feedback package for swimmers. The package included modeling, role-playing, videotape feedback, and verbal feedback. While the swimmer was
watching his or her performance on tape, the experimenter provided positive feedback for correct components and corrective feedback for incorrect performances.
The results showed that an individual videotape feedback package was effective for
producing improvements in performance with young competitive swimmers. Boyer
et al. (2009) examined the effectiveness of video modeling by experts with video
feedback on the development of three complex gymnastic skills by four female
competitive gymnasts. Video modeling by experts with video feedback consisted
of the gymnast performing the skill, immediately watching an expert performance
and viewing her own performance side by side, and then attempting the skill again.
The results show that the intervention improved skill performance more quickly than
regular practice and coaching alone.
Zeigler (1994) examined the effects of attentional shift training on the execution of soccer skills. The training procedures included watching videotapes of
their team in soccer matches, evaluating correct tactical decisions made in a
limited amount of time, and executing the skills in a practice session. Results
showed that intervention yielded improvement in the performance of soccer
skills. In each of these studies, video feedback was part of an intervention
package. None of these studies have evaluated video feedback by itself as a
means to improve a sports performance.
Considering that few studies that have evaluated video feedback for improving
athletic performance, that video feedback is combined with other procedures, and that
no research has been conducted evaluating video feedback procedures for enhancing
skills related to martial arts, the purpose of this study is to evaluate video feedback for
enhancing three skills associated with a type of martial art called capoeira. Capoeira
is an Afro-Brazilian martial art, involving a system of self-defense that also has a
dancelike, acrobatic movement style (Lewis, 1992). Lewis (1992) describes it as ‘at
once game, sport, mock combat, and ritualized performance’; it involves two players
who ‘play a game’ (or exchange movements of attack and defense in a constant flow)
within a ring of musicians and singers.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
METHOD
Participants and Setting
Five participants (capoeiristas), two men and three women, ages 24 to 32 years,
participated. The participants had at least five months of experience, where they
had learned the basic movements of the sport and had exposure to the target behaviors
but had not yet mastered the skills. The participants were training consistently
throughout the study, receiving at least four hours of training a week. The intervention
took place after the regular training sessions at the training center where the participants
were members. The training center was an 8.8 m × 12.2 m air-conditioned room with the
majority of wooden floors, with one section of matted floors (3.2 m × 8.8 m). A mirror
covered the majority of the front wall.
Materials
The materials included a digital video camera, the Sony HD BloggieTM (Sony
Corp, Minato-ku, Tokyo, Japan), to record the performance and a laptop computer,
Acer Aspire 5515TM (Acer America Corp, San Jose, CA), with software (PICTURE
MOTION BROWSER Sony PMB 2010TM) to display the performance clip.
Target Behaviors and Data Collection
Three movements were targeted for intervention because they are moves
frequently taught to beginning students of capoeira. The target behaviors were the
revesado (front walkover), au de costa (cartwheel to the back), and macaco (back
walkover from the floor). Revesado is a movement done from standing position,
where the person uses momentum to place the hands on the floor (to the side of the
body) as the legs come over the body. The back is arched, so that when the legs land
on the floor (one leg after the other), the person can lift his or her body upright as the
hands come off the floor. The au de costa is a movement similar to a cartwheel, but
the person puts the hand on the floor behind the body (so that the back is arched),
with the other arm swinging over, and the person’s legs follow over the body, one
leg at a time. It is also landed one leg at a time, as the arms come off the ground
and the body comes upright again. The macaco starts from a squat position, when
one hand is placed behind the body, as the back arches and the opposite arm is swung
behind the body. The legs are straightened as they push off the floor to come over the
body, one leg following the other, and landing as such as the hands come off
the floor, bringing the upper body upright. Complete definitions of all three target
behaviors are listed in the checklists (Appendixes A, B, and C).
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
Video feedback in martial arts performance
15
Data were collected using a 15-item checklist for each skill; each component
scored as correct or incorrect. A percentage of the target behavior completed correctly
was calculated for each trial. The observers were trained to score the target behaviors
through instructions and practice scoring actual videos with feedback. A criterion of
at least 90% accuracy between observers was required before scoring.
Interobserver Agreement
Two independent observers scored 30% of all sessions. The percentage of
agreement was calculated by dividing the number of agreements for the components
on the checklist of a skill by the number of agreements plus disagreements. The
percentage of interobserver agreement was 84% for Gary, 86% for Jay, 83% for
Gloria, 82% for Sarah, and 85% for Jane.
Design and Procedure
A multiple baseline design across behaviors was used to evaluate the effects of
video feedback for each skill for each participant.
Baseline
Baseline data were collected after class at the training center that consisted of
instruction, modeling, rehearsal, and verbal feedback. Class continued throughout the
intervention phases. In a typical class, the instructor modeled capoeira movements while
giving instruction, allowed time for students to practice the movements, and then
provided feedback on how well they performed the movements. These practices were
done either simultaneously (all students engaging in the same movements, lined up
and facing a mirror) or one by one (in a manner of practicing the movement while going
across the length of the practice floor). In baseline and across intervention phases, the
target behavior was attempted, videotaped, and scored three to six separate times. No
prompting or feedback was provided in baseline.
Video Feedback
The participant was filmed three separate times attempting the target behavior after
the regular practice. Immediately after being filmed, the participant watched the clip
with the instructor. The instructor gave positive and corrective feedback while
utilizing the pause, slow motion, and replay controls. Positive feedback included
praise for steps performed correctly, and corrective feedback included identifying
steps that were not correct and providing instructions for completing them correctly.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
The participant then attempted the skill two more times while being filmed, and the
instructor provided feedback in the same manner. The first attempt was not scored,
but instead served as the first video to watch for the video feedback phase. The
subsequent two attempts were videotaped for scoring.
This video feedback procedure was performed separately for the second target
behavior once an increase in correct performance was observed in the first target
behavior. Video feedback was then applied to the third behavior after improvement
was noted in the second behavior.
Video Feedback with Practice
This condition was the same as video feedback, with the added component of
participants practicing the movement two to five times between videotaping. Each
time they practiced the movement, they received live feedback, where the coach
described what the participant did correctly and what he or she needed to improve.
Social Validity Measures
A social validity measure, similar to one used by Boyer et al. (2009), consisted of a
questionnaire with items scored using a 5-point Likert-type scale. The participants
were asked questions such as how much they liked the procedure, how much time
it took out of class, and how helpful it was (see Table 1 for the social validity survey).
Table 1. Questions and responses on the social validity measures for Gary, Gloria, and Sarah.
Strongly disagree Disagree Neutral Agree Strongly agree
1.
2.
3.
I liked the procedure.
The procedure took too long.
I felt the procedure was helpful
in learning the movements.
4. I liked using video feedback to
learn the movements.
5. I can do the revesado.
6. I feel comfortable doing the
revesado in the roda.
7. I can do the au de costa.
8. I feel comfortable doing the
au de costa in the roda.
9. I can do the macaco.
10. I feel comfortable doing the
macaco in the roda.
1
1
1
2
1
1
2
3
1
1
2
1
1
1
1
2
1
2
1
1
1
1
1
Note: The numbers represent the number of participants endorsing each item.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
Video feedback in martial arts performance
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RESULTS
Results are shown in Figures 1–5. After participating in the video feedback
intervention, the acrobatic movements for all capoeiristas increased from baseline
levels to consistently higher levels. Video feedback plus practice resulted in even
higher levels of performance.
Figure 1. Percentage correct skill performance across revesado, macaco, and au de costa for Gary.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
Figure 2. Percentage correct skill performance across revesado, macaco, and au de costa for Jay.
This study, similar to Boyer et al. (2009), reports two types of baseline means: total
baseline mean and the end of baseline mean. Total baseline mean consists of the
average percentage of the movement performed correctly across the entire baseline
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
Video feedback in martial arts performance
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Figure 3. Percentage correct skill performance across macaco, revesado, and au de costa for Gloria.
phase, and the end of baseline mean is the average of the second half of baseline.
These end of baseline means are reported because some skills showed an increase during lengthy baseline periods, presumably because of regular coaching and practice.
Gary’s revesado scores increased from a baseline mean of 48% to an intervention
mean of 69%, although there was a decreasing trend in this phase. During the video
feedback with practice condition, the behavior gradually increased to a mean of 81%
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
Figure 4. Percentage correct skill performance across macaco, revesado, and au de costa for Sarah.
for the last 7 data points. His means for macaco were 43% for baseline with a decreasing trend, and 68% for intervention, although the last 4 data points of the intervention
phase were all at 80%. Gary’s baseline au de costa showed an increasing trend, but
the end of the baseline was stable with a mean 53% for the last 9 data points. The
percentage correct increased immediately during intervention to a mean of 84%.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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Figure 5. Percentage correct skill performance across au de costa, revesado, and macaco for Jane.
Jay’s revesado scores increased from a baseline mean of 56% to an intervention
mean of 75% with no overlap in the data (Figure 2). His scores for macaco increased
from a mean of 48% in baseline to a mean of 64% during intervention, although there
were only 2 data points and they overlapped with baseline. Jay did not receive the
intervention for the au de costa because of factors unrelated to the study.
Copyright © 2015 John Wiley & Sons, Ltd.
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DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
Gloria’s macaco scores (Figure 3) increased slightly from a baseline mean of 35%
to an intervention mean of 50%. When video feedback with practice was
implemented, the behavior increased in the second half of the phase to a mean of
69%. Her revesado mean was 48% in baseline. During the video feedback intervention, there was an increasing trend resulting in an end of intervention mean of 81%.
Gloria’s au de costa increased during baseline but stabilized at a mean of 47% in the
second half of baseline. Video feedback resulted in an immediate increase to a mean
of 65%.
Sarah’s macaco scores increased from a baseline mean of 56.5% to an intervention
mean of 69% with substantial overlap between baseline and data in the first half of
intervention. Her performance increased during video feedback with practice to a
mean of 81% with overlapping data points with the second half of the first intervention (Figure 4). Her scores for revesado increased from a mean of 44% in baseline to
a mean of 76% during video feedback with an immediate increase and no overlap.
Sarah did not receive the intervention for the au de costa because of factors unrelated
to the study. Her performance gradually increased across the extended baseline
phase, likely because of ongoing training she received in the class.
Jane’s au de costa scores increased from a baseline mean of 24% to an intervention
mean of 46%, although her performance was highly variable during intervention and
the mean of the last 5 data points was 44% (Figure 5). Her revesado means were 35%
for baseline and 70% for intervention, although she had only 2 data points during
intervention. Jane did not receive the intervention for the macaco because of factors
unrelated to the study, and her performance showed a slight increase over the course
of the phase.
The social validity questionnaire results only included Gary, Gloria, and Sarah,
and can be found in Table 1. Overall, the participants liked using video feedback to
learn the movements (Questions 1 and 4) and found it to be helpful (Question 3).
However, they did not feel like they could do the majority of the movements and
did not feel comfortable doing the movements in the roda (actual game of capoeira;
Questions 5 through 10).
DISCUSSION
The purpose of this study was to examine the effects of video feedback on the
performance of three acrobatic movements unique to the martial art of capoeira.
The results indicate that exposure to the intervention improved skill performance
more rapidly than regular class that included the unsystematic use of behavioral skills
training. However, the results were modest for the most part as the increases did not
approach 100% correct performance of the moves. During the baseline phase, some
Copyright © 2015 John Wiley & Sons, Ltd.
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DOI: 10.1002/bin
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skills were practiced as long as 45 sessions under regular class conditions and showed
gradual increasing trends indicating a learning effect from participating in the
ongoing classes. Each of the skills receiving intervention for each capoeirista
increased to levels above baseline, usually within the first few sessions of receiving
the intervention for that skill. All participants showed improvement, and in some
cases even doubled their baseline levels, following video feedback sessions. These
results suggest that adding video feedback to typical coaching and practice techniques could reduce the number of class sessions required to improve a difficult
skill. Video feedback with practice also helped improve the percentage of the
movement completed correctly, either immediately (such as with Sarah) or gradually
(such as for Gary and Gloria).
Although the video feedback intervention enhanced the skill performance to levels
above baseline, near flawless skill performance (80–100% correct) was only
occasionally achieved by the participants in this study, which was similar to the finding from Boyer et al. (2009). The skill checklists were designed so that a score of
100% would be equivalent to a perfect score for an expert capoeirista performing that
skill. The data also showed a good amount of variability, with some capoeiristas
substantially improving in one movement, while showing gradual or minimal
improvement in another movement. This variability may be due to difficulty of the
specific components of the movement or the capoeirista’s learning history of similar
movements. Typically, these three skills required some level of mastering backbend
movements, which could be physically limiting if the participant is not comfortable
with that skill. It could be argued that some of the capoeiristas had not yet reached
the level of physical conditioning to perform the skills to criterion because of strength
limitations, which can account for some variability in the skill.
This study extends research utilizing video feedback for improving athletic skill
execution (Boyer et al., 2009; Hazen et al., 1990; Scott et al., 1998; Zeigler 1994).
Hazen et al. (1990) compared standard behavioral coaching with an individual
feedback and a group feedback package for swimmers. Their study showed that
individual packages had the best effect on improving swimmers performance. This
study singles out the video feedback component without the use of the other components of the package. Boyer et al. (2009) examined the effectiveness of combining
video modeling by experts with video feedback on the development of three complex
gymnastic skills, while the current study examines the use of video feedback without
video modeling.
There were a few limitations in this current study. First, the amount of time it took
to do video feedback for all three movements in the same session was 45 min to an
hour because of the time it took to upload the video onto the laptop, watch the video
once, then watch the video using the other controls (such as pause), the actual verbal
feedback, and repeating this process multiple times for each movement. Also, there
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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A. BenitezSantiago and R. G. Miltenberger
may have been some distractions from other students staying after class to practice
other movements. Future researchers should utilize technology that could upload
the video more quickly and conduct the video feedback free from potential distractions. Second, some minor and major injuries were incurred from doing other skills
related to capoeira, but not as a result of the study, which may have impaired the
performance of some skills being measured or have taken the participants out of
the study altogether. As a result, intervention could not be evaluated for all three
behaviors for three of the five participants. Fortunately, intervention showed an effect
with all behaviors for which it was implemented. Furthermore, the behaviors with
which the intervention was not implemented served as control behaviors showing
the natural course of training as usual. These results allowed us to see that some
improvement occurred over time, but that the improvement was small and gradual
in comparison with improvements seen with the intervention.
Another limitation is that interobserver agreement was lower than desired.
Because research assistants were not familiar with the acrobatic movements from
capoeira, a substantial amount of training was provided. Interobserver agreement
also may be somewhat low because the angle at which the movement was filmed
on occasion made scoring difficult. Finally, follow-up assessment of the movements
was not collected because of time constraints and injuries incurred by the participants, and generalization probes could not be conducted because of the lack of
opportunities to record training rodas (actual games) in which these movements
would be utilized.
A final limitation was the low social validity rating for items related to competence
in performing the skills. The participants rated their competence low following
training, probably because they never mastered all steps in the skills. As such, their
scores were probably an accurate appraisal of their performance.
Future research should utilize video feedback for more experienced capoeiristas
who have nearly mastered the movement, to see if it can bring unmastered skills to
criteria. Also, generalization should be probed to see if the participants can successfully execute the skills in a game of capoeira. Lastly, a follow-up assessment should
be conducted to evaluate whether the improvements are maintained over time.
The present study evaluated the effects of using video feedback to improve three
acrobatic movements unique to the Brazilian martial art, capoeira. This study
demonstrated that the capoeiristas improved their performance of each movement
when the video feedback intervention was used in addition to regular practice
conditions. The participants learned the movements more quickly with video
feedback than with regular practice conditions. Video feedback was liked by the
participants and was found to be helpful in learning these movements. Based on
these results, it is hypothesized that this intervention has the potential to improve
other skills for other sports as well.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
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REFERENCES
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Boyer, E., Miltenberger, R. G., Batsche, C., & Fogel, V. (2009). Video modeling by experts with video
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Dowrick, P. W. (1991). Practical guide to using video in the behavioral sciences. New York, NY:
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Copyright © 2015 John Wiley & Sons, Ltd.
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APPENDIX A: REVESADO CHECKLIST
Revesado: Was this behavior completed correctly?
Correct
Incorrect
1. Start from the base position (left leg back).
2. Move into center position.
3. Simultaneously bend the left leg and straighten the right leg
(so that the upper body is leaning towards the left).
4. The left arm reaches for the ground, next to the left leg.
5. Right arm also reaches to the ground, parallel to the left hand.
6. The right leg lifts off the ground as the left hand touches the
floor (flat palm).
7. The right leg lifts (slightly bent) over the body as the left leg
pushes off the ground (goes from bent to straight).
8. The right hand prepares to touch the ground (flat palm).
9. As the right leg continues to go over the body, the left leg
lifts off the ground.
10. The right hand lands on the floor, next to the left hand.
11. As the right leg goes over the body and starts returning
to the ground, the back begins to arch.
12. The left leg goes over the body and the left hand begins to
lift off the ground.
13. When the right leg lands, the back is arched, the right hand
begins to lift off the ground.
14. The left leg begins returning to the ground, passing the
right leg so that it lands behind the body, raising the upper
body, with arms to the side.
15. Back to the base position.
APPENDIX B: AU DE COSTA CHECKLIST
Au de costa: Was this behavior completed correctly?
Correct
Incorrect
1. Start from the base position (left leg back).
2. Move into center position.
3. Bring the right leg next to the left so that the right leg
passes the left and is placed on the floor.
4. As the right leg is placed (and is slightly bent), the left leg
lifts to the front of the body.
5. The right arm stays straight as it reaches towards the floor
behind the body (and the palm is flat on the floor), so that
the back arches.
6. The left arm is opposite of the right arm (in the air to the front).
7. The left arm is swung back, behind the body.
8. As the left leg begins to swing over the body, the right leg
pushes off the ground (goes from bent to straight) and lifts from
the floor, beginning to follow the left leg over the body.
(Continues)
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
27
Video feedback in martial arts performance
APPENDIX B: (Continued)
Au de costa: Was this behavior completed correctly?
Correct
Incorrect
Correct
Incorrect
9. The left hand reaches behind the body and is placed on the ground
in a 45 degree angle from the right hand.
10. The legs follow over the body, the left leg leading the right leg.
11. The left leg is straightened as it lands parallel to the right hand.
12. The right hand comes off the ground as the right leg is parallel
to the ground.
13. The left hand comes off the ground right before the right leg reaches
the ground and is parallel to the left leg.
14. The upper body comes off the ground and moves to the right
until it is upright.
15. The body is now back in the center position.
APPENDIX C: MACACO CHECKLIST
Macaco: Was this behavior completed correctly?
1. Start from the base position (left leg back).
2. Move into center position.
3. Bring the right leg next to the left so that both
feet are facing to left.
4. Bend knees so that the body is close to the floor.
5. The right arm stays straight as it reaches towards
the floor behind the body (and the palm is flat on the floor).
6. The left arm is opposite of the right arm (in the air to the front).
7. The left arm is swung back.
8. Simultaneously, the legs are straightened so that the back is
arched and the feet push off the ground.
9. The left hand reaches behind the body and is placed on the
ground in a 45 degree angle from the right hand.
10. The legs follow over the body, the left leg leading the right leg.
11. The left leg is straightened as it lands parallel to the right hand.
12. The right hand comes off the ground as the right leg is parallel
to the ground.
13. The left hand comes off the ground right before the right leg reaches
the ground and is parallel to the left leg.
14. The upper body comes off the ground and moves to the right
until it is upright.
15. The body is now back in center position.
Copyright © 2015 John Wiley & Sons, Ltd.
Behav. Intervent. 31: 12–27 (2016)
DOI: 10.1002/bin
1
Understanding Research Assignment - Final
Instructions:
Please write your responses in blue font so that it is easier for me to grade.
Read the article on your own and answer the following questions.
A.
Variables
1.
Identify the independent variable and the dependent variable for an experimental study.
For a non-experimental study, what were the variables of interest? (What were the levels
of the independent variable – there has to be at least two. The IV = the variable that
differs between the groups. It is often the treatment. The DV = what the experimenters
used to determine if the IV had an effect. These are often formal assessments.)
a.
IV =
b.
DV =
OR for non-experimental research designs
c.
The variables of interest =
2.
Summarize the statement of the problem. (This is the researcher’s justification of the
why the experiment is needed. Typically, this will be in the Introduction.)
3.
Identify the research question (The hypothesis. This should be a question. What did the
experimenter’s want to know? The title of the article can be a shortened version of the
research question. Typically, the research question is in the Introduction.)
B.
Method Section
1.
Summarize the Method Section. (Read the entire Method Section. You should describe
what happened to the participants at the start of the study, the treatment, and the end of
the study.)
C.
Research Design
1.
Identify the research design. (First, identify the overall category. Was this a descriptive
study? A correlational study? An experimental study? A quasi-experimental study? A
single-subject design?) Once you have identified the overall category, you need to
specify the exact type. For example, “This was a descriptive study and used naturalistic
observation.”
2
a.
Type of research =
b.
Specific research design =
D.
Results/Discussion
1.
How were the results recorded? Did the authors use a table or figure? If so, what was in
it? What formal tests did they use to measure the variables? For example, “The
researchers used the Vinland Adaptive Behavior Scales to measure the participants
overall level of functioning in daily life and the pre and post scores were displayed in a
table.) If applicable, what statistical tests were used? (Was it a t-test? An ANOVA?)
2.
Summarize the results. (Read the entire Results section. What happened?)
3.
What is a conclusion you can take from the study? (What is the take-home message from
this study? How can the findings be used by non-researchers?)
4.
Based on reading this study, what is a needed, future research topic? (Hint: many
authors towards the end of the Discussion section talk about their view of needed future
research. You can use one of theirs or a research question that is your own.)
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