Table 2 Factor scores derived by factor analysis to allocate the SIB items into new subscales

1a: Shake hands

0.18637

0.10742

0.14187

0.46777

0.06278

1b: Follow directions

0.03926

0.16075

0.09979

0.72810

−0.02260

1c: Sit/move to table/pull tray

0.14512

0.07164

0.03912

0.81773

0.09756

2: Examiner’s name (immediate recall)

0.19391

0.01890

0.35278

0.20451

0.00918

3: Subject’s name

0.13280

0.09591

0.11500

0.27894

0.13269

4a: Write name

0.14911

0.83191

0.21540

−0.01825

−0.13753

4b: Copy name

0.18811

0.79331

0.22121

0.02954

−0.17792

5: Current month

0.09048

0.10255

0.16135

−0.00452

0.08214

6: Months of the year

−0.08840

0.44571

0.16330

0.06817

0.13195

7: City

0.03403

0.23398

0.47705

0.03550

0.13178

8a + 8b: Descriptive naming (cup + spoon)

0.19170

0.11481

0.45178

0.17732

0.53765

9a: Reading comprehension

0.04419

0.56384

0.01299

0.09907

0.24333

9b: Verbal comprehension

0.10071

0.58147

0.04924

0.17725

0.22978

9c: Reading

0.06602

0.75731

−0.03219

0.10638

0.12338

10: Sentence recall

0.12520

0.43543

0.27214

0.11551

0.15668

11a + 11b: Repetition (people spend money + baby)

0.17676

0.15277

0.29899

0.46208

0.21274

12: Digit span (series)

−0.01152

0.12864

0.39120

0.09214

0.02801

13: Verbal fluency

0.22551

0.00574

0.60501

0.16787

0.25116

14: Examiner’s name (delayed recall)

0.02598

0.04244

0.22845

0.06847

−0.00027

15 + 20: Naming object in photograph (cup + spoon)

0.20978

0.21774

0.18377

0.15042

0.67844

16 + 18: Using cup (photograph + object)

0.24127

0.04208

0.48144

0.06123

0.41299

17 + 22: Naming object (cup + spoon)

0.19141

0.15694

0.16444

0.19876

0.70735

19 + 24: Forced choice naming (cup + spoon)

0.34707

0.04743

0.04278

0.33749

0.37978

21 + 23: Using spoon (photograph + object)

0.24747

0.06307

0.40561

0.15432

0.39211

25: Immediate recall of objects (cup + spoon)

0.30110

0.10494

0.46109

0.22645

0.17432

26 + 30a + 30b: Color naming (blue + red + green)

0.52207

0.21932

0.07852

0.03810

0.36658

27: Color matching

0.59979

0.05950

0.12284

0.12189

0.17387

28: Colored block

0.56639

0.10328

0.02037

0.12734

0.05381

29: Color discrimination

0.68207

0.13255

0.28264

0.15338

0.11077

31: Shape matching

0.54832

0.13483

0.23207

0.22148

0.32796

32: Shape

0.55816

−0.04496

0.22437

0.19948

0.09445

33: Shape discrimination

0.58847

0.06018

0.38125

0.26172

0.10459

30c + 34a + 34b: Shape identification (square + circle + triangle)

0.36032

0.26761

0.33625

0.21808

0.20124

35a: Drawing (circle)

0.23055

0.20295

0.28592

0.04922

0.25047

35b: Drawing (square)

0.23820

0.30433

0.47077

0.06087

0.13839

36: Auditory span

0.21216

0.12792

0.28611

0.27011

0.10342

37: Visual span

0.26459

0.28920

0.30645

0.17403

0.30167

38: Delayed recall of objects (cup + spoon)

0.37135

−0.04291

0.47166

0.16280

0.07484

39: Orientation to name

0.15592

0.01837

0.16938

0.58642

0.14839

40: Language ability (free conversation)

0.16147

−0.07097

0.40767

0.47483

0.16766