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This self-report measure is designed to screen for problematic patterns of internet use and related functional impairment. The Chen Internet Addiction Scale (CIAS) assesses core features commonly associated with excessive online behavior, including diminished control, increasing use over time, distress when unable to access the internet, and interference with daily routines.
The questionnaire includes 26 items and typically takes about 5 minutes to complete. Responses are scored to yield an overall index and domain-level indicators that can support clinical formulation, risk identification, and monitoring of change over time. The Chen Internet Addiction Scale (CIAS) is intended to complement, not replace, a comprehensive clinical interview and consideration of contextual factors (e.g., developmental stage, comorbid symptoms, and psychosocial stressors).