For the following example, think about the following:
• How was the outcome measured?
• At what level was the outcome measured?
What was the control group?
• Were confounding variables controlled?
l. A study was performed to exaniine the development of children's ability to judge age. Four groups of children (aged 4•-5, 6--7, and years) were used. Half of the children in each group were male. Each child was shown 50 pairs of photographs of faces and asked to decide which face in each pair was the older. The score taken for each child was the number of correct decisions, out of 50.