Loni has worked at local dry cleaners for the past two years as a cashier.

Loni has worked at local dry cleaners for the past two years as a cashier. When the store was not busy with customers, Loni enjoyed helping Donatella, the seamstress, with various tasks such as sewing on buttons and fixing minor holes. Recently, Loni's job description was changed to include working with Donatella in the Alterations area 10 hours a week. Since then, Loni's enjoyment of working with Donatella has decreased. What theory would explain Loni's decrease in enjoyment of her job and explain why?