N-Effect . . . Another Argument for Small Class Size

Psychologists asked a question basic: "Modern life often seems like a rat-race. But does one's motivation to run the maze, to compete, depend on how many other 'rats' are in the race?"

Well . . . yes, apparently so.

The researchers found that people do better in smaller competitive situations than in large ones, which they call the N-Effect, "the discovery that increasing the number of competitors (N) can decrease competitive motivation." Their studies show "that average test scores (e.g., SAT scores) fall as the average number of test-takers at test-taking venues increases." That is, people do better on some tasks if they think they are competing against only 10 other other people instead of 100 people.

The psychologists suggest where further study is needed but note that their findings may shed light on debates about class size and student success:

. . . One such example concerns the debate on the role of class size in education (Mishel, & Rothstein, 2002), where some suggest class-size is rather insignificant (e.g., Hanushek, 2002) while others deem it important (e.g., Krueger, 2002). The N-Effect, however, sheds new light on this debate by revealing that as the mere N of students in the classroom increases, motivation to compete and exert academic effort are likely to decrease. In fact, perhaps the N-Effect could partly solve the mystery of the falling SAT scores in recent years (Finder, 2007), if one were to find that the average N test-takers reporting to testing venues is continually increasing.

Finally, we conclude by qualifying Zajonc’s (1965) recommendation in his seminal facilitation article, which stated: “If one were to draw one practical suggestion . . . he would advise his student . . . to arrange to take his examinations in the company of many other students, on stage, and in the presence of a large audience. The results of his examination would be beyond his wildest expectations…” (p. 274, Zajonc, 1965). Our social comparison account of the N-Effect would recommend having only a few others on stage; adding too many competitors may dampen, rather than enhance, the motivation to compete.

 (Picture of large psych class courtesy of Karma Moths )

The paper by Stephen M. Garcia and Avishalom Tor--The N-Effect: More Competitors, Less Competition -- is forthcoming from Psychological Science.