Active-Constructive Responding

Conveying enthusiastic, supportive responses to the positive events shared by someone you have a close relationship with. Related to, but distinct from, capitalization. See also positive empathy.

Reference:

Gable, S. L., Reis, H. T., Impett, E. A., & Asher, E. R. (2004). What do You do when things go right? The intrapersonal and interpersonal benefits of sharing positive events. Journal of Personality and Social Psychology, 87(2), 228–245. https://doi.org/10.1037/0022-3514.87.2.228