Document Type : Original Article(s)

Authors

• Sayyedabbas Haghayegh ¹
• Mohammadbagher Kajbaf ²
• Ahmad Shabani ³
• Mohammad Nikbakht ⁴
• Hojattolahe Farahani ⁵

¹ MSc, Clinical Psychology, Isfahan University, Isfahan, Iran

² Assistant Professor, Psychology, Isfahan University, Isfahan, Iran

³ Associate Professor, Library and Information Science, Isfahan University, Isfahan, Iran

⁴ BSc, Psychology, Isfahan University, Isfahan , Iran

⁵ Psychology, Isfahan University, Isfahan, Iran

Abstract

Abstract Introduction: The purpose of present research is to investigate psychometrics properties of internet Assessment Scale (IAS-40),as a comprehensive instrument which includes four subscales: Internet Anxiety, Internet Usefulness,  Enjoyment and Self efficacy Methods: This is a survey research .For this purpose,359 Esfahan, Najafabad and Khorasgan university students who have been engaged in education and study in 2006-2007 education year were selected as study sample. Results: The results of final analysis showed that all four subscales have high (internal consistency) and (test-retest) reliability. Concurrent validity of internal Anxiety (r=.53) and Self efficacy(r=.55) were significant.(p=.05).Results of Confirmatory Factor Analysis(CFA)showed that the four factors have completed harmony with main structure of questionnaire and all factors were significant. Conclusion: This scale is a valid, reliable and useful instrument. Keywords: Internet; Psychometry; Psychological Tests; Ration Value Scales