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t&m test 2

QuestionAnswer
In psychological testing, validity refers to: Whether a test measures what it claims to measure
A test cannot be valid unless it is also Reliable
Which type of validity concerns how well test items represent the domain being measured? Content validity
The Content Validity Ratio (CVR) involves The number of judges who rate an item as essential
Criterion-related validity includes Concurrent and predictive validity
Predictive validity is best demonstrated when Test results forecast future outcomes
Concurrent validity is established when Test scores correlate with an existing measure taken at the same time
The coefficient of determination equals The square of the correlation coefficient (r²)
Face validity differs from other types because it Reflects a subjective sense that a test looks relevant
Construct validity focuses on Theoretical consistency between test behavior and the underlying trait
Criterion contamination occurs when Predictor and criterion share overlapping content
One effective way to prevent criterion contamination is to Gather independent criterion data
A multitrait–multimethod matrix is used primarily to evaluate Construct validity
In a multitrait–multimethod matrix, low correlations are expected between Different traits, different methods
Which is not a recommended way to reduce criterion contamination? Using identical questions in both measures
A raw score represents The unadjusted number of correct responses
A percentile rank of 60 means the examinee Scored higher than 60% of the group
The formula for percentile rank is: B/N × 100
The best measure of central tendency for a skewed distribution is the Median
The standard deviation represents The average distance of scores from the mean
Approximately what proportion of cases lie within ±1 SD in a normal distribution 68%
Roughly 95% of cases fall within how many standard deviations of the mean .±2
A z-score of +1 corresponds approximately to which percentile 84th
The formula for calculating a z-score is (X − Mean) / SD
A z-score of 0 corresponds t The mean of the distribution
Why are T-scores often preferred over z-scores They eliminate negative numbers and use an easy-to-interpret scale
The formula to convert z to T is T = 10z + 50
In Item Response Theory (IRT), the focus is on: The performance of individual items and trait estimation
The latent trait in IRT is symbolized by θ (theta)
In Classical Test Theory (CTT), the primary unit of analysis is: The test as a whole
In IRT, the a parameter represents Discrimination
The b parameter in IRT refers to Item difficulty level
The c parameter in IRT models Probability of guessing correctly
An item characteristic curve (ICC) shows the relationship between Latent ability and probability of a correct response
A flatter ICC indicates Low discrimination
An item with high discrimination will show A steep ICC slope
A raw score variance of zero means All examinees received identical scores
The inattention parameter in IRT accounts for Mistakes caused by lapses in attention
Criterion-related validity is strengthened by Correlating independent predictors with objective outcomes
Construct validity is best supported when The test correlates with related constructs and not unrelated ones
Reliability guarantees validity. (True/False) false.
Construct validity depends partly on theoretical consistency. (True/False) true
The mean is the best measure of central tendency in all cases. (True/False) false
T-scores have a mean of 50 and SD of 10. (True/False) true
In CTT, items are evaluated by how they correlate with total test score. (True/False) true
In IRT, the c parameter represents item difficulty. (True/False) false
Percentile ranks show how a score compares to others. (True/False) true
A standard deviation of 0 means no variation among scores. (True/False) true
In IRT, higher theta values indicate greater ability. (True/False) true
A test can be reliable but still lack validity. (True/False) true
Created by: claire_manna
 

 



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