If a behavior has a negative impact on other people, it is referred to as behavior

Assume that you are predicting X from Y. Which of the following correlation coefficients

would yield predictions with the most error? a. r= -.20. b. r= -.40. c. r= -1.00. d. r= +.10.

The mental retardation shown in Down syndrome is caused by

a. the absence of the 21st chromosome. b. a buildup of waste products in the neurons of brain. c. a genetic error involving a missing vital enzyme. d. the presence of an extra 21st chromosome. e. an inherited faulty gene.