What was the dominant school of thought in psychology during the 1950s and 1960s

A)  behaviourism 
B)  structuralism 
C)  Gestaltism 
D)  functionalism

Dominant School

The leading or most influential theory, methodology, or practice within a particular field or discipline.

Behaviourism

A theoretical approach in psychology that emphasizes the study of observable behaviors over internal phenomena such as thoughts and feelings.

Gestaltism

A psychological theory that proposes that the human mind considers objects in their entirety before, or in parallel with, the perception of their individual parts, suggesting that the whole is greater than the sum of its parts.