Question

Reduction in one's own individual effort when working on a collective tasks is indication of

Answer 1

In social psychology, social loafing is the phenomenon of a person exerting less effort to achieve a goal when they work in a group than when they work alone. 

Answer 2

In social psychology, social loafing is the phenomenon of a person exerting less effort to achieve a goal when they work in a groupthan when they work alone. This is seen as one of the main reasons groups are sometimes less productive than the combined performance of their members working as individuals, but should be distinguished from the accidental coordination problems that groups sometimes experience.

Research on social loafing began with rope pulling experiments by Ringelmann, who found that members of a group tended to exert less effort in pulling a rope than did individuals alone. In more recent research, studies involving modern technology, such as online and distributed groups, have also shown clear evidence of social loafing. Many of the causes of social loafing stem from an individual feeling that his or her effort will not matter to the group

I hope it help you..
Please mark me brainlist