YW meaning in Academic & Science ?

Gratitude, thankfulness or gratefulness, from the Latin word gratus "pleasing, thankful", is a feeling of appreciation felt by and/or similar positive response shown by the recipient of kindness, gifts, help, favors, or other types of generosity, to the giver of said gifts.

The experience of gratitude has historically been a focus of several world religions. It has also been a topic of interest to ancient, medieval and modern philosophers, and continues to engage contemporary philosophers.

The systematic study of gratitude within psychology began in the year 1998 when Martin Seligman introduced a new branch of psychology: positive psychology. A type of psychology that focuses on reinforcing positive traits. The study of gratitude within psychology has included the understanding of the short term experience of the emotion of gratitude (state gratitude), individual differences in how frequently people feel gratitude (trait gratitude), and the relationship between these two aspects, as well as the therapeutic benefits of gratitude.