Dr. Frolicker shows a group of 4-year-olds a set of 10 items on a tray. She then mixes them up with some unfamiliar items, and asks the children to point to the ones in the original set. Dr. Frolicker is testing .

recognition memory.                      

Explanation:

Recognition memory: In psychology, the term "recognition memory" is described as one of the sub-categories of an individual's declarative memory.

Recognition memory referred to an individual's capability to recognize formerly encountered individuals, events, or objects. When an individual encounter the formerly experienced phenomena again then the environmental content is being matched to his or her already stored different memory representations and often triggers a matching signal.

In the question above, Dr Frolicker is testing recognition memory.

if im not mistaken its a. collective emotional arousal

this is called police cynicism. i hope this .