CYFO Product

Adolescent Personal Data Inventory (APDI)

The present edition of APDI was developed and validated in 1985. There are 10 Inventories in a Test Folder of APDI. The tests include:

  • Self-concept
  • Study behaviour
  • Behavioural health attributes
  • Psychopathology
  • Career aspirations
  • Reproductive behaviour
  • Ethical behaviour
  • Interests
  • Creative Thinking Patterns
  • Personal-social behaviour characteristics of adolescents.

Apart from face validity, the following psychometric characteristics of the tests were empirically established.

Validity (construct validity through the calculation of coefficient Alphas and Factors Analysis)

  • Convergent construct validity was also established for each test. Discrimnant construct validation was also used to ensure the internal consistencies and construct validates of the tests.


  • Internal consistency reliability and average inter-item patterns were ensured.
  • The inventories have been used in Nigeria and many parts of Africa for the past three decades and the tests have been found useful, and effective for youth development programmes, counseling services and other adolescent and youth-related services.


  • A test folder consisting of 10 inventories costs N100.00 minus postage, The tests can be purchased from CYFO Behaviour Services.