ABSTRACT
The present research was conducted to standardize Symptom Checklist-R on psychiatric and non psychiatric population of Lahore city. Lahore. The research consisted of two stages. At stage one, an indigenous Symptom Checklist developed by Rahman and Sitwat in 1990[1], was reviewed by the research team comprising of 4 trainees of Advanced Diploma in Clinical Psychology and I supervisor. After thorough review, 83 more symptoms were added in that indigenous list of symptoms according to DSM-IV[APA, 1994][2][to make the checklist more comprehensive to use with the psychiatric population. After finalizing the list, Symptom Checklist-R was administered on a sample of 120 subjects residing in different areas of Lahore city from different socioeconomic classes: lower; middle and upper. The analyses of each item revealed that no item /symptom obtained a mean value of more than 7 which clearly show that the non psychiatric respondents did not experience any of these symptoms which were related to different psychopathologies. To determine reliability of SCL-R, 120 subjects from non psychiatric population and 45 subjects from psychiatric population were re-administered the SCL-R within 7-10 days. For the validation of the checklist, 120 psychiatric subjects diagnosed as having different psychopathologies were administered SCL-R along with some other translated instrument. 30 depressed patients were administeredSCL-R and BDI-II[3]; 18 somatic patients were administered SCL-R and two scales: Hysteria and Somatic Anxiety of CCEI[4]; 30 anxiety patients were administered SCL-R and STAI[5], 20 OCD patients were administered SCL-R and Padua Inventory; 32 psychotic patients were administered SCL-R and PANSS[6] and all psychiatric patients were administered LFT scale of SCL-R along with LFT Inventory[7], The psychiatric sample was collected from each of the above mentioned pathologies from different psychiatric units of teaching hospitals: Sir Ganga Ram; Mayo; Services; Punjab Institute of Mental Health [PIMH], Lahore and from out patient clinic of Centre for Clinical Psychology, University of the Punjab, Lahore. The high correlation coefficients between the scores of SCL-R and scores on other instruments clearly indicate that SCL-R is a reliable and valid tool to diagnose psychiatric clients. After determining reliability and validity of SCL-R, the cut offs based on psychiatric and non psychiatric population -were developed separately to use the checklist to diagnose different psychopathologies