While participating in a lengthy experiment involving job training for welfare recipients, the economy enters into a major recession. Posttest measurements found that job training was unsuccessful in helping participants locate jobs. However, the experiment’s designers claim that the findings were inconclusive because of internal invalidity. Which of the following sources of internal invalidity would they be most likely to name as the problem?
a. Contamination
b. Secular drift
c. Selection bias
d. Reactivity
e. Compensatory rivalry
b. Secular drift
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In defining a population, we need to specify all of the following EXCEPT:
a. the content of the population. b. the unit of analysis. c. the level of measurement. d. the extent of the population.
_____________________can involve tension and even dislike among group members.
A) Managerial conflict B) Staff conflict C) Relationship conflict D) Individual conflict
A social worker wants to discontinue an intervention and continue to monitor the target
behavior for sustained change, this is called? a. Propulsive b. Baseline c. Intervention d. Reversal
You are looking for an answer to this question: To what extent can I generalize the research findings beyond the research sample(s) in the current study? You are interested in:
a. external validity b. Concurrent validity c. Content validity d. internal validity