Answer:
temporal; social
Explanation:
Kerri is using a __temporal____ comparison and Matt is using a __social____ comparison.
Temporal comparisons are performed inside an inner edge of reference, whereby people look at themselves across time. Kerri is comparing her scores across time, then it is a temporal comparison.
Social comparison hypothesis expresses that people decide their own social and individual worth dependent on how they stack facing others. Matt is comparing his scores to Kerri´s. Then, he is uisng social comparison.