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The current study introduced a theory-driven, multidimensional measure of problematic Internet use: the Online Cognition Scale (OCS). Undergraduate students (n = 211) in an industrial/organizational psychology course completed the OCS, along with measures of procrastination, rejection sensitivity, loneliness, depression, and impulsivity. A confirmatory factor analysis indicated that problematic Internet use consists of four dimensions: diminished impulse control, loneliness/depression, social comfort, and distraction. As hypothesized, the OCS predicted all of the study variables in the expected directions. Representing a departure from previous research in this area, the current article focused on procrastination, impulsivity, and social rejection as key elements of problematic Internet use. Furthermore, interactive applications (e.g., chat) were most related to problematic Internet use, and scores on the OCS predicted being reprimanded at school or work for inappropriate Internet use. As a result, the utility of the OCS for both clinical assessment of Internet addiction and as an organizational preemployment screening measure to identify potential employees who are likely to abuse the Internet in the workplace (also known as "cyberslacking") were discussed.

This paper presents a long-term follow-up study of 984 patients operated on for a herniated lumbar disc between 1959 and 1991. It was possible to follow 98% of patients from the time of operation to the time of writing. The mean follow-up period was 10.8 years. The most common presenting complaint was back pain with sciatica in one leg; the most frequent neurological finding was impaired straight-leg raising. Myelography confirmed the diagnosis in 80% of patients, but more recently enhanced computerized tomography and magnetic resonance imaging have been the preferred studies. The operative procedure was either hemilaminectomy or laminectomy with x 3.5 magnification and fiberoptic lighting. Herniated lumbar discs involved L4-5 and L5-S1 with equal frequency (47%). The recurrence rate was 6%, one-third of which developed during the 1st year after operation. The complication rate was 4%; there were no intraoperative vascular or intestinal injuries. The Prolo Functional Economic Outcome Rating Scale was used to measure long-term outcome and the results were compared to those of Pappas, et al. Patients who did sedentary work and housewives had statistically higher total and economic Prolo scores (p< 0.01) than those who did strenuous work. The majority of patients with the "failed-back syndrome" had pending legal or Workers' Compensation claims, or were at psychological risk for surgery. In 89% of patients the outcome was good--defined as a Prolo score of 8 in 10%, 9 in 19%, and 10 in 60%.

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