Nichols’ Theory of Ability Conceptions As discussed briefly in Chapter 1,Nicholls’ theory of ability conceptions(Nicholls’ 1978,1984) builds on attribution theory by specifically examining what developmental and situational factors influence how individuals think about effort and ability in school-related contexts. He defined ability as “what a person can do “(Nicholls’ ,1987,p.800) and adopted Heider’s (1958) assumption that ability limits the extent to which high levels of effort can increase performance .Nicholls’ theory consists of two main components. The first component is primarily developmental and explains how children’s reasoning about ability changes over time, while the second component is situational and explains why mature individuals might adopt different conceptions of ability in different contexts. In Nicholls’(1978) original development study,participants ages 5 through 13 were shown videos of two eight-year old children working on maths problems at their desks. One child in he video spent all of the time working in the workbook (high effort),while the other child spent half of the time working around the room (low effort).participants were then told either that both children got the same number of answers correct on the math problems