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Anales de Psicología

On-line version ISSN 1695-2294Print version ISSN 0212-9728

Abstract

SUAREZ-ALVAREZ, Javier; PEDROSA, Ignacio; GARCIA-CUETO, Eduardo  and  MUNIZ, José. Locus of Control revisited: development of a new bi-dimensional measure. Anal. Psicol. [online]. 2016, vol.32, n.2, pp.578-586. ISSN 1695-2294.  http://dx.doi.org/10.6018/analesps.32.2.200781.

Locus of control (LOC) has a long tradition in Psychology, and various instruments have been designed for its measurement. However, the dimensionality of the construct is unclear, and still gives rise to considerable controversy. The aim of the present work is to present new evidence of validity in relation to the dimensionality of LOC. To this end, we developed a new measurement instrument with 23 items. The sample was made up of 697 Spanish participants, of whom 57.5% were women (M=22.43; SD= 9.19). The results support the bi-dimensionality of LOC: internal (α=.87) and external (α=.85). Furthermore, both subscales have shown adequate validity evidence in relation to self-efficacy, achievement motivation and optimism (rxy> .21). Statistically significant differences were found by sex (p < .05): men scored higher in external LOC and women in internal LOC. The validity evidence supports a two-dimensional structure for the LOC, and the measurement instrument developed showed adequate psychometric properties.

Keywords : Internal locus of control; external locus of control; dimensionality; validity.

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