Liang, Chiang, Chien, and Yeh (2007) tested whether teachers for children with cancer (case) perceived these children similarly to a group of healthy children (control). They measured a variety of social factors, including social withdrawal, somatic complaints, and other social problems. The following table summarizes many of their results using the related-samples t test.

(a) Is this a repeated-measures design or a matched-pairs design?
(b) Interpret the results displayed in the table. Do teachers perceive children with cancer as having more social problems than their peers?

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Mean(SD) Controlt Measures Withdrawn 0.32 (2.58) 0.151.45 3.52 <.01 Somatic 0.19 (2.22) 0.06 (1.24) 3.85.001 Case t p Value complaints Social 0.26 (3.34) 0.08(1.32) 4.31 <.001 problems