Psychometric Design Criteria

Rob Williams Assessment Ltd has considerable experience in psychometric design criteria. Firstly, assessing the internal reliability of psychometric tests. Secondly, designing psychometric validation studies. Both are key stages in any psychometric test design project.

Many of the UK’s and US’s leading test publishers have used Rob Williams Assessment’s to calculate and prove the reliability of their newly developed psychometric tests.

There are two main types of reliability study: internal reliability and test re-retest reliability. Both represent best practice in psychometric design. Hence both reliability measures are key stages of a psychometric test development project.

Internal Reliability

An reliability value of 0.7 is the cutoff value for aptitude tests / ability tests. The measure used is called Cronbach’s Alpha.

A higher internal reliability value of 0.8 is considered acceptable for personality scales. There is academic debate about whether situational judgement tests can be expected to have internal reliability. Regardless of this Rob Williams Assessment ltd has developed SJTs with Cronbach’s Alpha values in excess of 0.8.

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Test-Retest Reliability 

Test-retest reliability is a key final stage of test development. Typically, two administrations occur a few weeks apart. This tests the reliability of the two sets of results.

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10 personality tips to help your Study Skills

  1. Find time to study – If you manage your time badly, inevitably you will be less productive than if you manage it well. This can lead to increased stress and anxiety levels, especially around exam time.
  2. Keep to a routine – Work in the same place at the same time each day. Also, make sure you have everything you need before you start.
  3. Work to your strengths – Schedule challenging tasks for when you are most alert, and routine ones for when you may be feeling more tired.
  4. Don’t waste time – Rather than reading irrelevant material, skim and scan to help you decide if you need to read something critically and in-depth.
  5. Avoid distractions – Related to above. Switch emails and social media off to prevent your mind wandering while trying to learn new information!
  6. Regularly review your notes – Edit out what you don’t need. Ask yourself the question: “Is this information is relevant to my assignment, and how does it relate to what I already know.”
  7. Vary how you to take notes – For example, use Mind Maps and diagrams to generate ideas and linear notes to focus your ideas for essay or report plans.
  8. Be critical – Make sure that you always add your own comment to every concept or quotation that you write down. Maintain a critical and analytical approach at all times!
  9. Plan your work – If writing an assignment produce a detailed plan before you start to write it. This will make the drafting process much less stressful
  10. Understand different styles  – By understanding different writing styles – such as academic, journal and journalistic styles – you can put what you read into perspective. In particular, you can become more aware of any particular bias.

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Strengths Psychometric ~ Our psychometric test designPsychometric design criteria ~ Our personality test design  ~ Work personality test designPersonality asssessment designRealistic Job Preview Design.

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