Elaine Hatfield and her co-workers randomly matched new University of Minnesota students for a Welcome Week dance. On the night of the blind date, the couples danced and talked for more than two hours and then took a brief intermission to rate their dates. What determined whether they liked each other?

a. similarity of values
b. similarity of academic competence
c. physical attractiveness
d. common family background

Option A,  similarity of values

Explanation:

People with same values preferably fall to like each other and hence they talk more as compared to people sharing other common bases such as family status, academic profile and attractiveness.  

It is very difficult to sustain a relationship if there is a difference in values.  

People sharing common thoughts on relationship’s importance tend to have a better understanding and coherent mutual relationship.  

Differences in values between two people in relationship tend to portray two different values for the same relationship which is difficult to carry on in long run.  

Thus, if values are same, a relationship could be long lasting and fruitful  

Hence, option A is correct