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WJ-R Frequency Table: Within-Cluster 
Differences

 

Within-Cluster Difference and Frequencies of Differences

Cumulative %

Cluster

Subtest

Subtest Comparison

Difference Score

1%

2%

5%

10%

15%

20%

25%

Glr

Memory for Names (MFN)

MFN vs VAL

12.09

42

38

31

25

22

19

17

Visual-Auditory Learning (VAL)

MFN vs D-MFN

11.98

37

32

26

21

17

15

13

Delayed-MFN (D-MFN)

VAL vs D-VAL

12.09

47

43

33

28

24

21

19

Delayed-VAL (D-VAL)

Gsm

Memory for Sentences (MFS)

MFS vs MFW

16.63

39

35

28

24

21

18

16

Memory for Words (MFW)

MFS vs NRev

14.19

48

43

35

29

25

22

20

Numbers Reversed (NRev)

MFW vs NRev

17.32

48

43

35

29

25

22

20

Gps

Visual Matching (VM)

VM vs CO

20.31

35

32

27

22

20

18

16

Cross Out (CO)

Ga

Incomplete Words (IncW)

IncW vs SBld

16.40

43

40

33

28

25

22

20

Sound Blending (SBld)

IncW vs SPatt

16.16

50

45

37

31

28

24

22

Sound patterns (SPatt)

SBld vs SPatt

14.85

51

44

36

30

26

24

21

Gv

Visual Closure (VCl)

VCl vs PRec

20.54

48

44

38

31

27

23

21

Picture Recognition (PRec)

Gc

Picture Vocabulary (PV)

PV vs OV

14.43

34

31

26

21

19

17

15

Oral Vocabulary (OV)

PV vs LC

16.81

39

35

29

24

21

18

17

Listening Comprehension (LC)

OV vs LC

15.94

38

33

27

23

20

18

16

Gf

Analysis & Synthesis (A/S)

A/S vs CF

11.98

40

37

30

26

22

19

17

Concept Formation (CF)

A/S vs SpRel

15.70

45

40

34

29

25

22

20

Spatial Relations (SpRel)

A/S vs VAnal

12.98

42

37

31

26

23

20

18

Verbal Analogies (VAnal)

CF vs SpRel

14.73

46

41

34

29

24

21

19

CF vs VAnal

11.80

39

36

30

25

21

19

17

SpRel vs VAnal

15.56

43

39

33

28

24

22

20

Difference Score = SDzSQRT[(2-r1-r2)]

John and Ron thank Dr. Woodcock for his very generous granting of access to portions of the WJ-R standardization data and for his kind permission to post these tables.

 

Woodcock, R. W., & Mather, N. (1989). WJ-R Tests of Cognitive Ability --Standard and Supplemental Batteries: Examiner's Manual. In R. W. Woodcock & M. B. Johnson, Woodcock-Johnson Psycho-Educational Battery--Revised. Chicago: Riverside Publishing Co. All rights reserved.