Developmentalists agree that longitudinal research is more accurate than cross-sectional research

In the balanced placebo design, half of participants are given alcohol and half are not. What effects can be measured among the group that is told they are getting a nonalcoholic drink but are actually given alcohol?

a) Effects of alcohol on behavior while controlling for expectation b) Effects of expectations on behavior while controlling for alcohol c) Effects of behavior on expectations while controlling for alcohol d) Effects of alcohol on expectations while controlling for behavior

What was the most significant psychometric problem of the 1937 Stanford-Binet Scale?

a. differential variability of IQ scores as a function of age b. narrower age range c. more problematic scoring standards and instructions d. poor predictive validity