Exam 2: Thinking Critically With Psychological Science

Dr.Donelian wants to reduce his students' perceptions that psychological research merely documents the obvious.His best strategy would be to ask the students to

Which statistical phenomenon refers to the tendency for extraordinary or unusual events to be followed by more ordinary events?

Jean Piaget developed his ideas about children's thinking after carefully observing and questioning only a few children.Which research method did he use?

Researchers observe random samples because these samples are likely to be

The most frequently occurring score in a distribution of scores is the

In an experiment designed to study the effectiveness of a new drug for treating diabetes,research participants who receive a placebo have been assigned to the ________ group.

A correlation coefficient can range in value from

Which of the following research methods would most effectively demonstrate that watching TV violence causes children to act aggressively?

If the correlation between the physical weight and reading ability of children is +0.85,this would indicate that

People often fail to make accurate generalizations because they are unduly influenced by ________ cases.

In a psychological experiment,researchers are interested in studying the potential effects of the ________ variable.

If IQ scores are normally distributed,having a mean of 100 and a standard deviation of 15,approximately what percentage of people have IQ scores between 55 and 145?

Which research method assesses how well one variable predicts another without demonstrating a cause-effect relationship between the variables?

If university graduates typically earn more money than high school graduates,this would indicate that level of education and income are

The ________ is a measure of ________.

Testing hypotheses and refining theories in light of those tests is central to

In an experimental study of the effects of dieting on weight loss,dieting would be the

In a test of the effects of cigarette smoking on physical health and development,groups of monkeys were raised in either a smoke-free or smoke-infested environment.Monkeys in the smoke-infested environment were assigned to the _______ group.

In a test of the effects of sleep deprivation on problem-solving skills,research participants are allowed to sleep either 4 or 8 hours on each of three consecutive nights.This research is an example of

A representative sample is one that accurately reflects a larger