4. To see how participants responded to questions about the presence of a gun immediately after the theft (on day one), campus security asked the participant how likely it was that
the thief had a gun immediately after the incident. The experiment then proceeded as
usual, with participants in either the experimental or control group. The next day (day
two), the police detective also asked about whether the participant saw a gun. Data
analysis showed that participants' answers about the likelihood that the thief had a gun
became more extreme on follow-up questioning by the police detective. That is,
regardless of whether they were in the control or experimental condition, participants
who reported that the thief had a gun on day one were convinced he had a gun on day
two. That is, the mean score that a gun was present was similar for the experimental
group (M=65%, SD = 11.4%) and the control group (M=63%, SD = 13.26%).
a. Maturation
b. Regression to the mean
c. Selection
d. Mortality
e. Instrumentation
f Testing
g. History
h. Interactions
i. Diffusion
j. No Threat