Answer:
B. spontaneous recovery
Explanation:
Spontaneous recovery: In psychology, the term spontaneous recovery is more or less associated or connected with conditioning and learning. Fundamentally, spontaneous recovery is defined as the reappearance or restoration of a response being conditioned earlier and had been destroyed. The restoration or recovery can occur only after the behavior is not exposed to the CS or conditioned stimulus for a specific time.
In the question above, the given statement is an example of spontaneous recovery.
Answer:
Social (psychologist).
Explanation:
Given that Professor Thurstone is investigating a teacher's negative perceptions influence in the student's tests, he is most likely a social psychologist. This type of psychology studies how people's (not individuals per se) thoughts, feelings and behaviors are influenced by the presence of others. In this case, his group of individuals would be the students, and the influence he is studying is that of the teacher that causes negative perceptions in his group of study.
