A survey of clerical workers' attitudes toward their work identified a group of secretaries with very positive attitudes  They responded Strongly agree to such statements as I enjoy word processingand I like learning new secretarial skills   These secretaries had been rated by their supervisors as excellent workers -- far better than secretaries whose attitudes were identified as less positive
Clearly these secretaries' positive attitudes toward their work produced excellent job performance
It does not consider the possibility that secretaries with very positive attitudes toward their work might also have had very positive attitudes toward other activities.