Which language a child speaks (English or Chinese, for example) depends almost entirely on differences in environment, and therefore has approximately what level of heritability?

In a demonstration that is described in the textbook, people are asked to determine whether pairs of numbers are physically different

It is typically more difficult for people to make these judgments when the numbers are conceptually ________ because of ________ processes that interfere. a. far apart; automatic b. far apart; controlled c. close together; controlled d. close together; automatic

Professor Lee wants to examine the effects of two different teaching methods on student

performance. She uses the first method of teaching in her 1st-year introductory course and the second method in her 2nd-year advanced course. She finds that student performances are better in the advanced class than in the introductory class. She concludes that the second teaching method is superior. What is the problem with her conclusion? a. The variables had invalid operational definitions. b. There was no control group for comparison. c. The presentation of teaching materials was not counterbalanced. d. Interrater reliability in measuring student performance was low. e. There is a confounding of students' year in school with teaching methods.