Exam 1: Tiinking Critically With Psychological Science

When a difference between two groups is statistically significant, this means that

After detailed study of a gunshot wound victim, a psychologist concludes that the brain region destroyed is likely to be important for memory functions. Which type of research did the psychologist use to deduce this?

If a set of standardized test scores is normally distributed, having a mean of 50 and a standard deviation of 10, approximately 68 percent of the group members receive scores somewhere between

Several weeks after a political election, voters often exaggerate their ability to have predicted the election outcome. This best illustrates

Which of the following is a statistical measure of both the direction and the strength of a relationship between two variables?

In a psychological experiment, the experimental factor that is manipulated by the investigator is called the ________ variable.

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.

The average price for different brands of toothpaste could be visually displayed in a

The transmission of political practices and religious customs from one generation to the next best illustrates the importance of

Which research method would be most effective for identifying the mating rituals of North American deer?

To minimize any differences between participants who are in the control and experimental groups, psychologists make use of

To study the development of relationships, Dr. Rajiv carefully observed and recorded patterns of verbal and nonverbal behaviors among men and women in singles bars. Which research method did Dr. Rajiv employ?

In an experimental study of the effects of anxiety on self-esteem, anxiety would be the ________ variable.

Debriefing refers to

Which of the following is NOT a basic research technique used by psychologists?

Hindsight bias most directly contributes to the perception that

To minimize the extent to which outcome differences between experimental and control groups can be attributed to placebo effects, researchers make use of

In a group of five individuals, two report annual incomes of $10,000, and the other three report incomes of $14,000, $15,000, and $31,000, respectively. The mode of this group's distribution of annual incomes is

The range is

Hindsight bias often leads us to place too much faith in