│ =35= =54= =22= =55= Estimating │ −14 61 06 −41 Lengths │ │ 07 36 −28 34 ───────────┴────────────────────────────────────────────────── TABLE FROM WEGLEIN │ │ Coefficients of correlation between school subjects (teachers’ marks) in the case of 59 high school pupils. │ │ ACADEMIC GROUP ╒════════════╤══════════╤══════════╤══════════╤══════════╤══════════╕ │ │ ENG. I │ ALG. I │ HIST. I │ LATIN I │ DRAWING │ ├────────────┼──────────┼──────────┼──────────┼──────────┼──────────┤ │English I │ │ .22│ .20│ .19│ .37│ │Algebra I │ .22│ │ .42│ .65│ .09│ │History I │ .20│ .42│ │ .57│ .13│ │Latin I │ .19│ .65│ .57│ │ −.22│ │Drawing │ .37│ .09│ .13│ −.22│ │ ╘════════════╧══════════╧══════════╧══════════╧══════════╧══════════╛ COMMERCIAL GROUP ╒═══════════════╤═══════╤═══════╤═══════════╤═══════╤═══════╤═══════╕ │ │ENG. I │ BKK. │COM. ARITH.│STENOG.│TYPEWR.│DRAWING│ ├───────────────┼───────┼───────┼───────────┼───────┼───────┼───────┤ │English I │ │ .69│ .52│ .54│ .50│ .15│ │Bookkeeping │ .69│ │ .66│ .48│ .50│ .50│ │Com. Arithmetic│ .52│ .66│ │ .38│ .52│ .53│ │Stenography │ .54│ .48│ .38│ │ .51│ .21│ │Typewriting │ .50│ .50│ .52│ .51│ │ .31│ │Drawing │ .15│ .50│ .53│ .21│ .31│ │ ╘═══════════════╧═══════╧═══════╧═══════════╧═══════╧═══════╧═══════╛ These are fair samples of the results of studies in correlation, among mental functions, in groups of individuals more or less select. Even physical traits, like height and longevity, have been found to give slight positive correlation with mental traits. Evidently there is _a general organic quality_, which shows itself to some extent wherever the individual is fairly tested or “sampled.” IV. STUDIES OF DISORGANIZING MINDS Another series of attempts at the solution of this problem has been made through observations upon deteriorating minds. The question is, Do mental functions deteriorate together or separately in dements? When a person is “losing his mind,” is the impairment general or selective in its progress?