Uses of Psychological Test Flashcards
used to rate people in determining if they fall relative to their peers or some standard performance
Rating test
used for evaluation of people so that they can be matched with the appropriate services or environment
Placement test
- used for the selection of a group of people from a larger pool of applicants or candidates
- used as screening devices to help identify the individuals who are most likely to be successful
Selection test
are used to indicate whether or not an examinee’s performance meets a pre-selected criterion
Competency and Proficiency Test
are used to determine the nature and typicality of an individual’s underlying characteristics
Diagnosis test
Test can be used to make decisions by evaluating an outcome, such as the value of a program, a product, or a course of action
Outcome evaluation test
Offers two alternatives for each item
Dichotomous format
Offers more than two alternatives
Polytomous / polychotomous format
- requires the respondent indicate the degree of agreement with a particular attitudinal question
- five alternatives are offered
Likert format
Similar to the likert format but uses a scale which holds greater number of choices
Category format
The subject receives a long list of descriptive or adjectival statements and indicates whether each one is characteristic of him / herself or someone else
Checklist
- combination of the checklist format and the category format
- the subject is given statements and asked to sort then 9 piles
Q-sorts
A format used in ability tests wherein the items are arranged from easy to difficult
Spiral omnibus format
- term for a set of methods used to evaluate test items in order to come up with a cluster of valid and reliable test items
- the basic methods involve assessment of item difficulty and item discriminability
Item analysis
- it is defined by the number of people who get a particular item correct
- the higher the proportion of people who get the item correct, the easier the item
Item difficulty index (P)
interpretation of 0.20 - below in item difficulty index
very difficult
interpretation of 0.21 - 0.40 in item difficulty index
difficult
interpretation of 0.41 - 0.60 in item difficulty index
optimum
interpretation of 0.61 - 0.80 in item difficulty index
easy
interpretation of 0.81 - above in item difficulty index
very easy
- determines whether the people who have done well on particular test items have also done well on the whole test
- an item can have a positive or negative discriminating power
- the higher the d value, the better the test item
Item-discriminability index (d)
interpretation of 0.08 - below in item discriminability index
very poor item
interpretation of 0.09 - 0.19 in item discriminability index
poor item
interpretation of 0.20 - 0.29 in item discriminability index
fair item
interpretation of 0.30 - 0.39 in item discriminability index
good item
interpretation of 0.40 - above in item discriminability index
very good item
Formula for item discriminability index
d = Up - Lp / U
Formula for item difficulty index (P)
P = Np / N
a test item can be retained if its level of difficulty is ____, _____, or _____, and discriminating power is ____ to ____
- easy
- optimum
- difficult
- fair
- very good
a test item has to be rejected if it is either _____ or ____ and its discriminating power is ____, ____, or _____
- very easy
- very difficult
- poor
- negative
- zero
a test item can be modified if its difficulty level is _____ and its discriminating power is _____
- optimum
- negative
Formula of z-score
Z = score - mean / standard deviation
another standard score which would indicate the exact location of a score within a distribution with a mean score of 50
T- scores
T-score formula
T = 10 (z-score) + 50
The percentage of scores in its frequency distribution that are less than that score
Percentile rank
Percentile rank formula
Pr = B / N (100)
3 measures of central tendency
- mean
- median
- mode
The sum of all given values or items in a distribution divided by the number of values / items summed
Mean
The point in a distribution that divides into 2 parts so that 50% fall below and above the mean
Median
The value or item in a distribution with the most number of cases of highest frequency
Mode
Compares each person with a norm
Norm-referenced test
Describes the specific type of skills, tasks, or knowledge that the test taker can demonstrate
Criterion-referenced test
An abstract of sample of behavior of a patient or a client derived from results of psychological tests
Psychological report
Criteria of good psychological reports
- clarity
- meaningfulness of report
- synthesis
Language easily understand
Clarity
Details that are formed into broader concepts about the person
Synthesis