TY  - BOOK
AU  - Shen, Hao.
AU  - Shen, Hao.
AU  - Labroo, Aparna.
AU  - Wyer Jr., Robert S. 
TI  - So Difficult to smile :	: why unhappy people avoid enjoyable activities 
U1  - DPer 155.205 J826 July-September 2020 v. 119 n. 1-3 
PY  - 2020///
CY  - Washington ; 
PB  - American Psychological Association , 
KW  - Attitude (Psychology)
KW  -  Social Psychology
KW  - Mental stereotype
N1  - Journal of Personality and Social Psychology , vol. 119, no. 1, pages 23-39, July 2020
ER  -