- Datafile Name:
Brain size
Datafile Subjects:
Medical
Story Names:
Brain Size and Intelligence
Reference: Willerman, L., Schultz, R., Rutledge, J. N., and Bigler, E. (1991), "In Vivo Brain Size and Intelligence," Intelligence, 15, 223-228.
Authorization: Contact authors
Description: Willerman et al. (1991) collected a sample of 40 right-handed Anglo introductory psychology students at a large southwestern university. Subjects took four subtests (Vocabulary, Similarities, Block Design, and Picture Completion) of the Wechsler (1981) Adult Intelligence Scale-Revised. The researchers used Magnetic Resonance Imaging (MRI) to determine the brain size of the subjects. Information about gender and body size (height and weight) are also included. The researchers withheld the weights of two subjects and the height of one subject for reasons of confidentiality.
Number of cases: 40
Variable Names:
- Gender: Male or Female
- FSIQ: Full Scale IQ scores based on the four Wechsler (1981) subtests
- VIQ: Verbal IQ scores based on the four Wechsler (1981) subtests
- PIQ: Performance IQ scores based on the four Wechsler (1981) subtests
- Weight: body weight in pounds
- Height: height in inches
- MRI_Count: total pixel Count from the 18 MRI scans
The Data:
Gender FSIQ VIQ PIQ Weight Height MRI_Count
Female 133 132 124 118 64.5 816932
Male 140 150 124 ¥ 72.5 1001121
Male 139 123 150 143 73.3 1038437
Male 133 129 128 172 68.8 965353
Female 137 132 134 147 65.0 951545
Female 99 90 110 146 69.0 928799
Female 138 136 131 138 64.5 991305
Female 92 90 98 175 66.0 854258
Male 89 93 84 134 66.3 904858
Male 133 114 147 172 68.8 955466
Female 132 129 124 118 64.5 833868
Male 141 150 128 151 70.0 1079549
Male 135 129 124 155 69.0 924059
Female 140 120 147 155 70.5 856472
Female 96 100 90 146 66.0 878897
Female 83 71 96 135 68.0 865363
Female 132 132 120 127 68.5 852244
Male 100 96 102 178 73.5 945088
Female 101 112 84 136 66.3 808020
Male 80 77 86 180 70.0 889083
Male 83 83 86 ¥ ¥ 892420
Male 97 107 84 186 76.5 905940
Female 135 129 134 122 62.0 790619
Male 139 145 128 132 68.0 955003
Female 91 86 102 114 63.0 831772
Male 141 145 131 171 72.0 935494
Female 85 90 84 140 68.0 798612
Male 103 96 110 187 77.0 1062462
Female 77 83 72 106 63.0 793549
Female 130 126 124 159 66.5 866662
Female 133 126 132 127 62.5 857782
Male 144 145 137 191 67.0 949589
Male 103 96 110 192 75.5 997925
Male 90 96 86 181 69.0 879987
Female 83 90 81 143 66.5 834344
Female 133 129 128 153 66.5 948066
Male 140 150 124 144 70.5 949395
Female 88 86 94 139 64.5 893983
Male 81 90 74 148 74.0 930016
Male 89 91 89 179 75.5 935863