Andrew loves to meet friends after work for drinks because he considers this a time to relax. Mariko thinks that Andrew is lazy by taking the time off, and that drinking that early in the evening is unhealthy. George Kelly would propose that these discrepancies reflect a difference between Mariko's and Andrew's:

George Kelly would propose that these discrepancies reflect a difference between Mariko's and Andrew's personal constructs.

Explanation:

According to psychologist George Kelly, the differences between individuals can be explained by their personal constructs. A personal construct is a person's way of predicting and interpreting events. It's as if each person does her own investigation of the world and how it functions. People collect and analyze information, then proceed to their own conclusions about it. Those conclusions are their personal constructs. However, it is important to keep in mind that personal constructs can change.