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stakeholder
people important in the lives of children, especially regarding the assessment of children
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assessment
process for gathering information to make decisions
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techniques
methods whether formal or informal for gathering assessment information
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accountability
being responsible for the proper education of all children
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high-stakes decision
is any test applied to make life-affecting decisions for the educational futures of young children
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authentic assessment
determining developmental progress of children through a variety of means, including observations and special problems or situations
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raw score
the number of items that a child answered correctly on a test
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mean
the arithmetic average of a group of scores
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range
the spread of the scores or the difference between the top score and the bottom score on a test
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standard deviation
the distance scores depart from the mean
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normal curve
bell-shaped curve representing the usual distribution of human attributes
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standarized test (norm referenced test)
test that interprets a child's performance in comparison to the performance of other children with similar characterisitcs
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population
group of individuals on which a standarized test is normed
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normative sample
subset of a population that is tested for a standarized test
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norms
scores obtained from the testing of a normative sample for a standarized test
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criterion-referenced test
a standarized test that compares a child's performance to his or her own progress in a certain skill or behavior
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derived score
score obtained by comparing the raw score with the performance of children of known characteristics on a standarized test
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age-equivalent score
derived score giving a child's performance as taht which is normal for a certain age
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grade-equivalent score
derived score giving a child's performance as tha which is normal for a certain grade
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interpolated score
derived score estimated from norm scores because no one with that particular score was actually part of the normative sample
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extrapolated score
derived score estimated from norm scores because the raw score is either less than or greater than anyone in th enormative sample
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percentile ranks
derived scores indicating the percentage of individuals in the normative group whose test scores fall at or below a given raw score
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standard score
is created statistically. this process converts raw scores to numbers that can be used to compare child progress on a particular dimension
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scaled score
statistically determined scores that are used to derive total scores or that refer to results on subtests of an instrument
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deviation quotients
standard scores with a mean of 100 and a standard deviation of usually 15
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normal-curve equivalents
standard scores for group tests; scale has 100 equal parts, mean is usually 50, and standard deviation is usually 21.06
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stanines
standard scores with nine unequal bands; bands four, five, and six represent average performance
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reliability
consistency, dependability, or stability test results
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test-retest reliability
ability to get the same results from a test taken twice withing two weeks
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interscorer reliability
ability of a test to produce the same results regardless of who administers it
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correlation coefficient
degree of relationship between two variables
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standard error of measurement
estimate of the amount of variation that can be expected in test scores as a result of reliability correlations
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validity
the extent to which a test measures what it is supposed to measure
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face validity
whether a test looks as if it is testing what it is supposed to be testing
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content validity
extent of how well a test tests the subject matter it is supposed to test
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criterion-related validity
relationship between the scores on a test and another criterion measure
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concurrent validity
relationship between a test and another criterion when both are obtained at about the same time
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predictive validity
how accurately a test score can be used to estimate performance on some variable or criterion in the future
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construct validity
the extent to which a test measures a theoretical characteristiv or trait
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convergent validity
is demonstrated when similar instruments measuring similar constructs yield comparable results
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treatment validity
the usefulness of test results for planning intervention
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social validity
describes the usefulness of assessment information for the teacher in the educational setting
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