A researcher designs a study to investigate the effect of feedback on perception of incomplete visual figures. each participant stares at the center of a screen while the researcher briefly projects incomplete geometric figures one at a time at random positions on the screen. the participant’s task is to identify each incomplete figure. one group of participants receives feedback on the accuracy of their responses. a second group does not. the researcher compares the mean number of figures correctly identified by the two groups.

Identify the independent and dependent variables in the study.

Identify the role of each of the following psychological terms in the context of the research.
a. Foveal vision
b. Feature detectors
c. Gestalt principle of closure

Describe how each of the following terms relates to the conclusions that can be drawn based on the research.

a. Random assignment
b. Statistical significance