Week 10 Tests and Measures Chapter 12
How Do We Assess the Psychometric Quality of a Test?
Conducting the Pilot Test
o Pilot Test: a scientific investigation of a new tests reliability and validity for its
Chapter 6 Test Reliability
What is Reliability?
o Reliability: the consistency with which an instrument yields measurements (if you use a scale, a
woman wont weight 200 lbs one minute and then 95 lbs the next)
o Measurement Error: variations or inconsiste
Construct Response (Essay)
depth of knowledge
Choose Response (multiple choice, t/f)
broader range of knowledge
easier to grade; objective
(defn)procedures for analyzing responses to test
SEM=SD (1-r)(sq rt)
There are two sections of PSYC 3020 Standard Deviation for both was 4 points
Sect. 1 test reliability (r)=.2
Sect. 2 test reliability (r)=.8
Holding SD constant, what happens to the SEM as reliability increases?
SEM for th
Graphologythe study of handwriting
Peter piper picked a peck of pickled peppers
Graphology Analysis(Reliability vs. Validity)
- reliability theory
- measurement error
- estimates of reliability
- measuring reliability
- influencing reliabilit
Most ability tests are
general ability measurements. Fewer instruments measure specific abilities
Group-administered. Fewer are individually-administered by qualified experts.
Chapter 5 How Do Users Interpret Test Scores?
o Levels of Measurement (compare your childs test scores with anothers or other schools,
Numbers represent labels or
categories of data. Numbers
have no quantitative value.
Exam II Review Sheet
1. Criterion Vs. Norm-Referenced Comparisons
o Criterion Relative to a set standard
o Norm Referenced Relative to others like you
2. Transformations (Z & T; Linear & Area)*
Do not change score
Take into account inf
Test & Measurement Exam I Review
The following IS NOT ALL INCLUSIVE. For a comprehensive review of the material, please read all
assigned abbreviated readings, and review all class lectures.
Terms to know:
o Sample of behavior
Chapter 7 Evidence of Validity Based on Content
What is validity?
o Validity: evidence that the interpretations that are being made from the scores on a test are
appropriate for their intended purpose (Chapter 6)
Validity: Yesterday and Today
- is a sample of behavior
- obtain under standardized conditions
- uses systematic rules for scoring numeric information. Striving for objective
TEST vs. Inventory
Why is standardization important?
Everyone takes the