Although a lot of empirical studies have been conducted on customer-relationship-management (CRM), little research on the exploration of the psychometric properties of CRM scale items, in the Zimbabwean context has been conducted. This empirical study, based on key informant data drawn from...

We derive asymptotic properties of estimators and test statistics to determine - in a grouped data setting - common versus group-specific factors. Despite the fact that our test statistic for the number of common factors, under the null, involves a parameter at the boundary (related to unit...