Types of Intelligence Tests

Individual or Group Tests

  • Individual Tests
  • Individual tests are administered to one person at a time.
  • These tests require the test administrator to establish a rapport with the subject and be sensitive to her/his feelings, moods expressions during the testing session. 
  • These allow people to answer orally in a written form or manipulate objects as per the tester's instructions.

Group Tests

  • A group intelligence test can be administered to several persons simultaneously. 
  • These do not allow an opportunity to be familiar with the subjects' feelings. 
  • They seek written answers usually in a MCQ format.

Verbal, Non-verbal or Performance Tests

Verbal Tests

  • These tests require subjects to give verbal responses either orally or in written form. 
  • These tests can be administered only to literate people.

Non-Verbal Tests

  • The non-verbal tests use pictures or illustrations as test items. These can be administered on illiterate people as well.
  • Example- Raven's Progressive Matrices (RPM) Test
An Item from Ravan's Progressive Matrices Test

Performance Tests

  • Performance tests require subjects to manipulate objects and other materials to perform a task.
  • Written language is not necessary for answering the items. 
  • They can be easily administered to people from different cultures.
  • Example- Kohs' Block Design Test

Culture-Fair or Culture-Biased Tests

Culture-Fair Tests

  • Culture-fair or culturally appropriate tests are those that do not discriminate against individuals belonging to different cultures.
  • These tests are developed in a manner that they assess experiences common to all cultures or have questions in which language usage is not required. 
  • Non-verbal and performance tests help reduce the cultural bias usually associated with verbal tests.

Culture-Biased Tests

  • Culture-biased tests are designed for a specific population and show biased results for a specific group, culture, and population due to cultural influence. 

Misuses of Intelligence Tests

  • Poor performance on a test may make the child ashamed and thereby adversely affect their performance and self-respect.
  • The results of the test may invite discriminatory practices / treatment from parents, teachers and elders in the society. 
  • Intelligence tests do not capture creative potentialities and practical side of intelligence.
  • They do not relate much to success in life.
  • Administering a test biased in favour of high class and middle class populations may underestimate the IQ of children coming from disadvantaged sections of the society.