Persistence as a function of locus of control and Expectancy of goal attainment

180 male students of 10+1&10+2 were tested on Rotter’s scale of locus of control and experimentally induced situations of probability of success by giving specific instructions. An Insoluble figure--‘perceptual reasoning task’ was used to test persistence of externally controlled Ss & internally controlled Ss in three experimental conditions i.e.P.25 (difficult task), P.50(intermediate task) &P.75(easy task).Persistence scores were taken as time spent by Ss on perceptual reasoning task. Analysis of variance & t-test were used for analysis of data. Findings concluded that-----(1) internally controlled Ss persisted longer at P.50&P.75 in comparison to P.25.(2) externally controlled Ss persisted longer at P.50 in comparison to P.25&P.75(3)there was no significant difference between internally controlled Ss and externally controlled Ss at P.50.