. Manual of mental and physical tests : in two parts : a book of directions compiled with special reference to the experimental study of children in the laboratory or classroom. n theearlier and small in the later stages of the experiment and thatthey were much greater with nonsense than with sense material(28 vs. 10 per cent). Dallenbachs work with 5-sec. exposure of visual materialbefore a class of children aged 7 to 10 years extended in dailyexercises over a period of 17 weeks. Like Foster he found theimprovement in visual apprehension rapid at first, then these pupils were divide
. Manual of mental and physical tests : in two parts : a book of directions compiled with special reference to the experimental study of children in the laboratory or classroom. n theearlier and small in the later stages of the experiment and thatthey were much greater with nonsense than with sense material(28 vs. 10 per cent). Dallenbachs work with 5-sec. exposure of visual materialbefore a class of children aged 7 to 10 years extended in dailyexercises over a period of 17 weeks. Like Foster he found theimprovement in visual apprehension rapid at first, then these pupils were divided into three groups on the basisof their ability first shown, the curve of improvement of thepoorest group shows interesting divergences: these pupils hada slower initial rise in capacity, but eventually surpassed thegroup of medium ability (Fig. 60). When re tested after 41weeks of no drill, the children in the experiment showed them- 288 ATTENTION AND PERCEPTION selves distinctly superior to classmates of their age who hadnot been througli the drill, so that we here have apparent evi-dence of a permanent improvement in capacity effected by drillin visual apprehension.^. FIG. 60. EFFECT OF PRACTISE UPON VISUAL APPREHENSION (DALLENBACH). (6) Correlation with other abilities. Dalleubach found apositive correlation between capacity for visual apprehensionand school standing, amounting in one group to .85, in anotherto .20. Jones tests gave a negative correlation, — , betweenvisual apprehension of a group of 10 objects and auditory mem-ory for words naming common objects. (7) A qualitative analysis of the data secured in this experi-ment shows that the efficiency in visual apprehension exhibitedby any /Sf will depend on the following: (a) Native capacity for concentrating attention in general. This is thefactor which it is desired primarily to isolate and measure, but it is im-possible to secure such a measurement until the other factors are meas-ured or eliminated. (&) The
Size: 2467px × 1013px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1900, bookdecade1920, booksubjectpsychophysiology
