The emotional intelligence construct is still the focus of substantial controversy. In this paper we contribute to the current debate regarding the factors that comprise the emotional intelligence construct. While some authors argue that emotional intelligence consists of a number of social and emotional competencies including self-motivation (Goleman 1995; 1998), others maintain emotional intelligence abilities are restricted to abilities that directly link emotions to cognition (Mayer & Salovey 1997). This latter view does not include motivation as a factor, but acknowledges it as a separate, related function. We conducted an empirical study to test these two different conceptualisations. One hundred and thirteen individuals completed measures of emotional intelligence and McClelland's (1987) three motivational needs. Structural equation analyses clearly supported Mayer and Salovey's (1997) conceptualisation that motivation is a factor related to emotional intelligence but is not a component part of the emotional intelligence construct. Implications are discussed.

Evidence for and against the validity of the assumption of equal environments for MZ and DZ twins is reviewed, and the consequences of possible violations of the assumption are considered. Further methods of testing the validity of the assumption, as well as possible means of correcting in part for violations, are suggested.