Researcher Elizabeth Loftus has found that eyewitness memory is extremely reliable and doesn't change over time

If a significant F ratio is obtained, then

a. Ho must be accepted b. Ho must be rejected c. Ha must be rejected d. there must be at least four sample means

Your text discusses two meta-analyses on adolescents' self-esteem. These analyses found that

a. gender differences are very small throughout the lifespan. b. gender differences are somewhat larger during late adolescence than during other periods. c. gender differences are large during childhood and adolescence, but small in adulthood. d. surprisingly, the average male scores slightly lower in self-esteem than the average female.