Extraindividual Differences and Sales Performance
Cravens and Woodruff (1973) recognized the need to adjust criterion standards for influences
beyond a salesperson's control, and they attempted to determine the degree to which these
factors
explained variations in territory performance. In a multiple regression analysis using
dollar volume of sales as the criterion, a curvilinear model yielded a corrected R2 of .83, with
sales experience, average market share, and performance ratings providing the major portion of
explained variation- This study is noteworthy because a purer estimate of individual job performance
was generated by combining the effects of extraindividual influences (territory workload,
market potential, company market share, and advertising effort) with two individual difference
variables
(sales experience and rated sales effort).