These links may be useful if you are considering using validated scales in your evaluation. Bear in mind that some scales are copyrighted and there is a charge for their use. Generally the tools linked to in this section are freely available for use.
Oxford Cognitive Therapy Centre have an overview of different validated scales and some critique, with further information.
Using a QALY, or a ‘quality‐adjusted life year’ to measure of a person or group’s state of health and quality of life , is explained in this guide by Scottish Medicines
The Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS) is widely known and used for the monitoring of mental wellbeing in the general population and the evaluation of projects to improve mental wellbeing.
The Patient Health Questionnaire (PHQ-9) is recommended by IAPT for measuring depressive symptoms.
(2011) is a US based measurement. You have to register but it is well developed and slightly different to WEMWBS for example.