psyground

Internet Addiction Test (IAT)

Twenty questions about how online activity may affect time, responsibilities, relationships, sleep, and mood.

Method and research sources

What IAT measures

IAT is a widely used self-report measure of problematic internet-use patterns, including time loss, failed control, preoccupation, concealment, mood regulation, and interference with daily life.

How scoring works

Each item is scored from 0 for ‘does not apply’ to 5 for ‘always’. The 20 values are summed to a total from 0 to 100.

Method and sources

The foundational paper, early psychometric study, and systematic review/meta-analysis are listed below.

  1. Original publication1998
  2. Validation study2004
  3. Scientific review
    Psychometric Properties of the Internet Addiction Test: A Systematic Review and Meta-Analysis

    Sun Jae Moon, Jin Seub Hwang, Jae Yup Kim, Ah Lahm Shin, Seung Min Bae, Jung Won Kim

    2018

Resources are linked by digital habits and impact, not by an automatic addiction label.

Questions about IAT

Does a high score diagnose internet addiction?

No. The IAT is a screening and research measure, and the broad label is not a single formal diagnosis.

Does necessary online work count?

Answer with non-essential use in mind where possible. High required use can inflate some items without loss of control.

Why can ‘does not apply’ score zero?

The commonly used six-response version includes a zero option so irrelevant situations do not add points.