Page 8 - lessonnotes_Methods of Enquiry in Psychology

It gives an indication about the
degree of internal consistency of the test.
- it is based on the assumption that items of a test if they are from the same domain
should correlate with each other.
- For finding out internal consistency, the test is divided into two equal halves
employing odd-even method and correlation is computed between the scores of odd
and even items.

VALIDITY
 For a test to be usable, it should also be valid.
 It refers to checking if the test measure what it claims to measure.
 For example, if a test is constructed to measure intelligence, whether the test is
measuring intelligence or personality?

NORMS

 When norms are developed for the test, a test becomes a standardised test.
 Norm is the normal or average performance of the group.
 This helps us in comparing the performance of an individual student with others
of the same group.

TYPES OF TESTS

 Psychological tests are classified on the basis of
1. Their language
2. Mode of administration
3. Difficulty level
1) Depending on the language, it is divided into ~ verbal
~ non-verbal
~ performance tests
a) Literacy is required for taking verbal tests as the items have to be written
in some language.
b) In non-verbal tests, items are made of symbols or pictures.
c) Performance tests require movement of objects from their respective places
in a particular order.
2) Depending on the mode of administration, tests are divided into
~ Individual tests
~ Group tests
a) An individual test :
~ is administered by the researcher to one person at a time.