# sleep quality

8 results
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Scales

Tourist Wellbeing Scale (TWS)

A comprehensive psychometric review of the Tourist Wellbeing Scale (TWS), examining its theoretical foundations in...

September 6, 2026 memjavad
Scales

Insomnia Severity Index (ISI)

The Insomnia Severity Index (ISI) is a gold-standard, 7-item psychometric instrument developed by Dr. Charles...

September 5, 2026 memjavad
Scales

Pittsburgh Sleep Quality Index (PSQI)

A comprehensive academic guide to the Pittsburgh Sleep Quality Index (PSQI), covering its psychometric properties,...

September 5, 2026 memjavad
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