Formal and informal assessment Flashcards
Norm referenced testing is
testing an indivdiual and comparing their scores to a normative group
Criterion referenced testing is
testing an individual and comparing their scores to a standard given their age and educational status.
To choose the right formal assessment, you must consider
psychometrics, diagnostic accuracy, cultural and linguistic fit
What is psychometrics?
the science of measuring mental capacities and processes
What is validity?
the ability of a tool to measure what it claims to measure
What is reliability?
the ability of a testing procedure to be used repeatedly and elicit the same outcome
What is standardization?
studies that are completed to see if the test is valid and reliable and if the information can be used.
What are examples of standard comparisons in formal assessments?
age equivalence; standard score; z-score; t-score
What is a Z-score?
a numerical value denoting the number of SDs a person’s score is from the mean. They are expressed in numbers -3 to +3.
What is a T-score?
A numerical value denoting the number of SDs a person’s score is from the mean; however, the mean is 50 and the SD is +/- 10.
What is a standard score?
a numerical value that can be used to compare a person’s raw score on a test to the scores of peers
What is the age equivalence ?
A numerical representation of a person’s performance with regard to a specific age when the demonstrated skills are usually observed.
What is the stanine?
Normalized stanine scores (between 1 and 9) that have a mean of 5 and a SD of 2
What is the percentile rank?
A numerical score that expresses what percentage of the testing population scored lower than the person in question.
What is the normal curve equivalents?
Psychometric range from 1-99 with a mean of 50 and SD of 21.06
