Each participant has an equal chance of being placed in a group if a researcher uses which

The __________ were the first to use samples representing the total population of the United States to devise standards for interpreting test scores

A) Core Knowledge Perspectives B) American College Testing Assessments C) Stanford-Binet Intelligence Scales D) Wechsler tests

A variable, such as the personality of a subject, that might affect the outcome of an experiment would be controlled by

a. random assignment of subjects. b. assuming the effects of the variable are negligible. c. manipulating the dependent variables simultaneously. d. repeating the experiment several times until the results are consistent.