Variable-ratio schedule is the least resistant to extinction.

Which of the following best summarizes the relationship between intelligence and academic success?

a. intelligence tests are in no way correlated with school success b. intelligence tests administered at any time are weak predictors of school success c. intelligence tests administered during infancy and childhood are strongly correlated with academic success d. intelligence tests administered during childhood and adolescence are moderately correlated with school success

The congruency hypothesis suggests that depression results from:

a) incongruence in actual mood and expected mood b) unexpected success in an important area of interpersonal need c) a failure or rejection in an important area of interpersonal need d) congruence between expectation of depression and experience of depression