John has developed a scale to measure a person's fear of earthquakes.After the occurrence of an earthquake,he surveys 1000 individuals and finds the mean score to be 7.8 out of a possible 10 (the higher the score,the greater the fear).John concludes that fear increases after people experience an earthquake.This study is an example of a(n)
A) true experiment.
B) one group pretest-posttest design.
C) control group design.
D) one-group posttest-only design.

Question

Quizplus · Accepted Answer

This study is an example of a one-group posttest-only design since there is only one group (the 1000 individuals surveyed after the earthquake) and only a posttest (the measurement of fear after the earthquake). There is no control group or pretest to compare the results to.

John Has Developed a Scale to Measure a Person's Fear