Zakaei Ashtiyani,M , and Moghadam Far,N . "A comparative study of mindfulness, assertiveness skills as well as behavioral activation and behavioral inhibition among 15 year old boys of single parent families and those without parents in Gorgan city", Fundamentals of Mental Health, 19, special issue, 2017, 205-211. doi: 10.22038/jfmh.2017.8626