Melanie is always commenting on how she is not as smart as other people and how she is not good at anything in particular. Melanie likely suffers from which of the following?

If the correlation between IQ scores of identical twins raised together is found to be +.85 and the correlation between IQ scores of identical twins reared apart is found to be +.70, the .15 difference found between the two groups is most likely attributa

a. the impact of genetics. b. the impact of the environment. c. sampling errors. d. problems with the instruments used to measure IQ.

Retroactive interference of long-term memory means ________

a. old material has eliminated memories of new material b. old material interferes with remembering new material c. new material interferes with remembering old material d. new material represses short-term memories