Pyc480-7 Essay

3951 Words16 Pages
Development of psychological assessment measures Introduction The process of developing a psychological measurement assessment might seem like a daunting task, however I believe that a well-designed measurement tool will allow the user access to information that is both useful and practically applicable, thus making the decision making process less strenuous. Define the purpose The best way to proceed in the development of a test is to not have a predetermined idea in your head about what you want to add and what you wish to test, to as far as possible eliminate or reduce the possibility for bias to transpire. The best way is to lay out a plan for the design out on paper, take time to think through the purpose of the test that you wish to develop. The same rules applied in a project, by laying out the action plan and defining the activities and sub activities, apply here. Steps in the development of a psychological measure PHASE SPECIFIC STEPS Step 1 Planning  Specify the aim of measure  Define the content of the measure  Develop the test plan Step 2 Item Writing  Write the items  Review the items Step 3 Assembling, pretesting of experimental version  Arrange the items  Finalise length  Answer protocols  Develop administration instruction  Pre-test the experimental version of the measure Step 4 Item analysis  Determine item difficulty values  Determine item discrimination values  Investigate item bias  Identify items for final pool Step 5 Revision and standardisation of version  Revise test and item content  Select the items for the standardisation version  Revise and standardise administration and scoring procedures  Compile the final version  Administer the final version to a representative sample of the target population Step 6 Technical evaluation and establish norms  Establish validity
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