Page 184 - DEDU504_EDUCATIONAL_MEASUREMENT_AND_EVALUATION_ENGLISH

Educational Measurement and Evaluation

Notes Organic damage may be detected through selected kinds of subtests; for example, disturbance of
the visual-motor function as indicated by the diamond copying test (Stanford-Binet) and the
object assembly test (Bellevue), among others.
Scatter analysis (discussed in detail in Chapter 14) is essential to the discernment of superior,
inferior, and impaired psychological functions.
Sensitized observations on the part of the examiner will enable him, in general, to evaluate how
the subject proceeded in both success and failure.

What is Educational Quotient ?

Self Assessment

2. State whether the following statements are ‘true’ or ‘false’.
(i) The educational age index represents a pupil’s average of achievement in a group of
school subjects, measured by means of standardized tests.
(ii) Achievement tests are standardized on the basis of the performance of a representative
population.
(iii) The educational age index (EA) represents a pupil’s average level of achievement in a
group of school subjects.

13.4 Summary

• Relative Rank : The raw score (that is, the actual number of units or points) obtained by an
individual on a test does not in itself have much, if any, significance.
• Percentile Ranks : An individual’s percentile rank on a test designates the percentage of
cases or scores lying below it.
• The percentile method is a technique whereby scores on two or more tests, given in units
that are different, may be transformed into uniform and comparable values. This method
has the advantage of not depending upon any assumptions regarding the characteristics of
the distribution with which it is used. The distribution might be normal, skewed, or
rectangular.
• The percentile technique has the advantage of being easily calculated, easily understood,
and of making no assumptions with regard to the characteristics of the tolal distribution.
• Decile Rank : The decile rank is the same in principle as the percentile; but instead of
designating the one-hundredth part of a distribution, it designates the one-tenth part of the
group (N/10) in which any tested person is placed by his score. The term “decile” is used
to mean a dividing point. “Decile rank” signifies a range of scores between two dividing
points.
• Mental Age : This concept was introduced by Alfred Binet in 1908 in conjunction with the
first revision of his scale. In this scale and in its later revision, items are grouped according
to age levels. For example, selected items, passed by a specified percentage of five-year-old
children in the standardization sample are placed at the five-year level.
• To determine mental age, in the 1908 scale, Binet adopted the following rule : the child was
credited with the mental age of the highest year level in which he passed all test items, or
all but one.

178 LOVELY PROFESSIONAL UNIVERSITY