Measurement
SDQ-Pro: Strengths and Difficulties Questionnaire - Prosocial scale
Reference and/or access link:
Goodman, R. (1997). The Strengths and Difficulties Questionnaire: a research note. J Child Psychol Psychiatry, 38(5): 581-6. doi: 10.1111/j.1469-7610.1997.tb01545.x
Hawes, D.J. and Dadds, M.R. (2004). Australian data and psychometric properties of the Strengths and Difficulties Questionnaire. Aust N Z J Psychiatry, 38(8): 644-51. doi: 10.1080/j.1440-1614.2004.01427.x
https://www.sdqinfo.org/