Final answer:
The question pertains to which psychology study is analogous to the reaction to the Dress controversy; the answer is Solomon Asch's line length judgement study on conformity and judgement.
Step-by-step explanation:
The student is asking which of the historical psychology studies Gilchrist (2015) suggested is similar to the emotional reaction to the Dress controversy, in terms of a shared view of reality being violated. The correct answer to this question is a. Asch's line length judgement study. Solomon Asch's experiments on conformity and judgement dealt with how individuals may often conform to a group norm even when that norm contrasts with their own senses. In his studies, when faced with the unanimous but incorrect judgement of others, individual subjects often chose to agree with the group, thereby violating their own perception of reality.