Question

which psychological principle best explains why studying an hour a day for a week is more effective than one 7-hour study session?

testing effect

distributed practice

psychometrics

Explanation:

The question is about a psychological principle related to study effectiveness. Distributed practice refers to spacing out study sessions over time (like 1 hour daily for a week) rather than cramming (1 long 7 - hour session). The testing effect is about learning from taking tests, and psychometrics is about measuring psychological traits, so neither fits. Only distributed practice explains the benefit of spaced study.

Answer:

B. Distributed practice