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Week 11 collecting_data
1.
427-302 Methods of
Social Sciences Research
2.
3.
• •
CTT • Reliability • Validity • SPSS
4.
? • •
5.
(Measure)
(Attribute) (Object) (Number) , . .
6.
(Measure)
(Attribute) (Object) (Number) , (Test, Measure) (Construct Variable) (Subject) (Variable Values)
7.
TOEFLS
JDI (Job Description (Job Satisfaction) Index)
8.
•
(Items) • (Measure or Test)
9.
• •
10.
•
(Objectivity) • (Difficulty) • (Discrimination)
11.
Objectivity Subject
Reality Object Subjectivity Reality Subject Reality Object Subject
12.
•
(Reliability) • (Validity)
13.
Review of Classical
Test Theory • Variance o True Scores o Errors
14.
Observed Scores • 75
= 70 + 5 • 80 = 70 + 10
15.
True Scores • Reliability
o Var (T) / Var (X) o Var (T) / Var (T) + Var (E) • Reliabilty = Rx1x2
16.
Errors • Systematic Error •
Random Error
17.
Random Error
18.
Systematic Error
19.
Reliability VS. Validity •
Reliabilty = True Score + Systematic Error = T + ES • Validity = True Score =T
20.
Reliability VS. Validity
21.
Reliability VS. Validity
22.
Reliability • Stability (Times) •
Equivalence (Forms) • Consistency (Items)
23.
Test-Retest
24.
Stability (Times) • Test-Retest
25.
Parallel Form
26.
Inter-Rater
27.
Equivalence (Forms) • Parallel
Form 2 • Inter-Rater 2
28.
Consistency (Items) •
Average Inter-Item Correlation • Average Item-Total Correlation • Split-Half Correlation • Cronbach's Alpha
29.
Average Inter-Item Correlation
30.
Average Item-Total Correlation
31.
Split-Half Correlation
32.
Cronbach’ s Alpha
33.
Cronbach’ s Alpha •
Cronbach's Alpha
34.
(Validity) •
(Research Validity) • (Measurement Validity)
35.
Research Validity
36.
Classicial Classification of
Validity • (Face Validity) • Content Validity • Criterion-Related Validity • Construct Validity
37.
(Face Validity) •
38.
Content Validity •
39.
Criterion-Related Validity • •
2 Concurrent Validity Predictive Validity
40.
Concurrent Validity • •
41.
Predictive Validity • •
3
42.
Construct Validity • •
43.
Construct Validity
44.
Validity •
o Face Validity o Content Validity • o Concurrent Validity o Predictive Validity • o Construct Validity
45.
SPSS
46.
• •
47.
•
(Objectivity) • (Difficulty) • (Discrimination)
48.
• •
Pretest
49.
•
(Percent)
50.
• Item-Total Correlation •
Corrected Item-Total Correlation • t-test -
51.
• Reliability • Validity
52.
Reliability •
Correlation o Test-Retest o Parallel Forms o Split Half • Cronbach's Alpha
53.
Validity • • Known-Group Technique
t-test • Correlation • Factor Analysis (EFA vs CFA) • Multitrait-Multimethod Matrix (MTMM)
54.
EFA
X1 e1 F1 X2 e2 X3 e3 X4 e4 F2 X5 e5 X6 e6 X7 e7 F3 X8 e8 X9 e9
55.
CFA
X1 e1 F1 X2 e2 X3 e3 X4 e4 F2 X5 e5 X6 e6 X7 e7 F3 X8 e8 X9 e9
56.
Multitrait-Multimethod Matrix
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