Muhammad Kamran ,
Muhammad Usama Gondal 
Sumaya Batool 
The purpose of this article was to shower light on the quality of life that mostly we expect. Life quality is determined by two aspects i.e., physiological and psychological aspects. While if a person is addicted to the drugs, then both aspects of his/ her life is deteriorated to the extreme. Due to drug addiction, the negative psychological effects which arises are anxiety, stress, depression, and familial relationships while the negative physiological effects that arise from the drug addiction are weakness, headache, dizziness, and pain in the body, etc.
The main objective was to evaluate the quality of life of Diamorphine addicts, behavioral stimulation and inhibition, perceived social competence, and the relationship among these variables; and check differences between drug addicts on these variables based on their belongingness to joint and nuclear family systems. To achieve the objectives, 10 Diamorphine addicts were taken from Azm Drug Rehabilitation center, Sargodha, through purposive sampling. A total number of 10 participants responded to the 26- items quality of life survey (WHO-QOL-BREF), 24-items BAS/BIS (BIS/BAS scale) questionnaire, and 5-items perceived social competence questionnaire (Perceived Social Competence Scale II). Results were analyzed via SPSS version 20. The results showed that all three variables in the study were not associated with each other. Quality of life and social competence correlated -.25 (p = n.s); quality of life and BAS/BIS had .30 (p = n.s); while social competence and BAS/BIS had -.16 (p = n.s). It may be due to the cultural settings of Pakistan. In drug addicts, BAS has high activity, and BIS has low activity. And there is no significant difference in these variables among addicts of the nuclear and joint family system.