chronological age

Answer:

the child's actual age

data

Answer:

information gathered and collected during the assessment process

deciles

Answer:

division of scores into tenths or ten equal units. For example, the sixth decile is the point at which 60 percent of the scores fall below, whereas the ninth decile is the point at which 90 percent of the scores fall below

perdcentile rank

Answer:

a score indicating the percentage of people or scores that occur at or below a given score. If you have a rank of 75, this means that you did as well or better than 75 percent of the students in the class

quartiles

Answer:

values that separate data into four equal subsets, each containing one fourth of the data

scaled score

Answer:

specific subtest scores

Z-score

Answer:

Indicates how many standard deviations a score is above or below the mean. A Z score is s standard score distribution with a mean of zero and a standard deviation of 1

discrepancy

Answer:

in regard to learning disabilities, the difference between the student's actual academic performance and his or her estimated ability

exclusionary clause

Answer:

In regards to learning disabilities, the elimination of possible etiological factors to explain a pupil's difficulty in learning.

heritability studies

Answer:

A method of assessing the degress to which a specific condition is inherited; a comparison of the prevalance of a characteristic in fraternal versus identical twins