Transcript Validity

Forms and Definitions of
Validity
Emily Wughalter, Ed.D.
Summer 2010
Validity
Validity has two components:
relevance and reliability.
It can be measured both logically and
statistically.
General Types of Validity
Internal Validity
External Validity
Ecological Validity
Internal Validity
Content
Concurrent
Construct
Predictive
Content Validity
Does the measure or instrument
measure the content or entities about
which conclusions are to be drawn?
Does the test measure the content of a
course?
Logically determined
Construct Validity
Skills or traits underlying or composing
a complete or total test of an attribute
are called constructs. Each specific
component measures a part of the
whole and the sum of the components
or constructs equals the whole. An
example would be volleyball playing
ability would be composed of setting,
spiking, serving, and bumping.
Profile of Mood States
Tension-Anxiety
Anger-Hostility
Fatigue-Inertia
Depression-Dejection
Vigor-Activity
Confusion-Bewilderment
Sex Role Stereotypes
Bem Sex Role Inventory
Personality Attributes Questionnaire
Both measure related levels of
instrumentalism and expressiveness.
Not correlated with one another
West Virginia University
Sport Psychology Scales
The Athlete Burnout
http://wvuecommerce.wvu.edu/index.cfm?do=product.products&id=722226931_91w&category_id=69&sub_cat_id=78)
The Sport Imagery Questionnaire
http://wvuecommerce.wvu.edu/index.cfm?do=product.product&id=68281851%5F91w&product_id=888
Flow Scales
http://wvuecommerce.wvu.edu/index.cfm?do=product.product&id=68281851%5F91w&product_id=889
Group Environment Questionnaire
http://wvuecommerce.wvu.edu/index.cfm?do=product.product&id=68281851%5F91w&product_id=887
Mental Measurements Yearbook
http://library.sjsu.edu/gateways/academic/
Construct validity is measured both
logically and statistically. Factor
analysis is used to measure the
constructs underlying a test. Expert
reviewers are used to assist in the
identification of the factors (constructs).
Concurrent Validity
In concurrent validity a new test is
correlated with the measures obtained
on an already established test.
Statistically determined through
correlation analysis.
Predictive Validity
Predictive validity represents the value
of a measure for predicting
performance on another measure
(criterion) at some future date.
GREs, SATs are examples of predictive
tests
Determined statistically through
correlation
Factors affecting internal
validity
Criterion measure selected
Age
Sex
Experience
Selecting Criterion Scores
Best score – easy and not time
consuming
Mean score – most reliable
External Validity
External validity refers to the
generalizability of the the findings.
Ecological Validity
Real world science