An interaction between factors cannot occur unless

Select one:

a. there is a main effect for at least one of the two factors.

b. there is no main effect for either of the two factors.

c. The existence of an interaction is independent of the main effects.

d. there is a main effect for both of the two factors.

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Which of the following is a possible outcome from a 2x2 factorial design?

Select one:

a. one main effect

b. the other three choices are all possible to occur.

c. one interaction

d. no main effects

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The goal of the correlational research strategy is

Select one:

a. to describe an individual person or patient in great detail.

b. to examine and describe the causal relationship between variables.

c. to describe a variable (or variables) as they exist naturally.

d. to examine and describe the relationship between variables.

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In a correlational study, commonly,

Select one:

a. one variable is measured.

b. one individual is described in great detail.

c. two variables are measured.

d. one individual is treated.

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In a scatter plot

Select one:

a. each group mean is represented by two data points.

b. each group mean is represented by a single point.

c. each individual is represented by a single point.

d. each individual is represented by two data points.

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A positive value for a correlation indicates

Select one:

a. a much stronger relationship than if the correlation were negative.

b. increases in X tend to be accompanied by increases in Y.

c. a much weaker relationship than if the correlation were negative.

d. increases in X tend to be accompanied by decreases in Y.

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The Spearman correlation measures

Select one:

a. the degree of monotonic relationship.

b. the degree to which the relationship is causal.

c. the degree of linear relationship.

d. the degree of curvilinear relationship.

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The goal of the descriptive research strategy is

Select one:

a. to describe the relationship between two variables.

b. to describe a variable (or variables) as they exist naturally.

c. to establish the existence of a cause and effect relationship between variables.

d. to describe an individual person or patient in great detail.

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In the observational study of adolescents at the mall, you count the number of social interaction behaviors that occur within a one-hour observation period.This is an example of the ________ method of quantifying behavior.

Select one:

a. frequency

b. behavior counting

c. duration

d. interval

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Recording how many hours a week I study, involves using the _______ method, while simply recording whether or not I study in a week, involves using the __________ method.

Select one:

a. frequency; duration

b. interval; frequency

c. duration; interval

d. interval; duration

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In an observational study of children in a day care setting, you select one participant at a time for observation.This is an example of using

Select one:

a. time sampling.

b. interval method.

c. individual sampling.

d. event sampling.

Question25

Bird watching is most similar to what type of research?

Select one:

a. naturalistic observation

b. experimental

c. quasi-experimental

d. participant observation

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Which of the following are most similar to single-subject designs?

Select one:

a. between-subject experimental designs

b. time-series designs

c. nonequivalent control group designs

d. correlational designs