According to the principle of state-dependent memory, how does one's emotional state during learning affect later recall?

Explanation

State-dependent memory suggests that memory retrieval is most effective when an individual is in the same physiological or emotional state as they were during the initial encoding of the information. If a person is sad while studying, the emotional context becomes part of the memory trace. Consequently, they are more likely to retrieve that information successfully when they return to that same state of sadness.