Table 1 Descriptive statistics for tablet cognitive assessments

From: Collecting big data with small screens: Group tests of children’s cognition with touchscreen tablets are reliable and valid

Task name N Predictive validity Reliability Time taken
r LB UB b* ω LB UB 10% 50% 90%
Visual Search Speed 526 – .38 – .46 – .30 – .35 .74 .68 .78 1.59 2.18 3.30
Verbal Short-Term Memory 532 .43 .35 .51 .40     2.28 4.36 6.82
Spatial Short-Term Memory 532 .45 .37 .52 .41     1.55 3.05 5.30
G/N-G - D' 362 .18 .06 .30 .19 .53 .43 .62 1.70 4.32 4.68
G/N-G - Omission Errors 362 – .41 – .50 – .30 – .36 .71 .65 .77 1.70 4.32 4.68
G/N-G - Commission Errors 362 – .13 – .24 – .01 – .07 .60 .51 .67 1.70 4.32 4.68
Matrix Reasoning 515 .48 .40 .55 .46 .76 .73 .78 2.55 4.17 6.38
Reading Fluency 535 .63 .57 .69 .66 .87 .85 .89 3.15 3.20 3.32
Rhyme Judgement 488 .27 .18 .36 .26 .68 .59 .76 1.11 3.52 4.25
Phonological Discrimination 275 .26 .12 .39 .23 .72 .67 .78 4.73 5.32 6.54
Arithmetic Fluency 535 .55 .48 .61 .52 .89 .87 .91 3.48 3.53 3.65
Non-Symbolic Num. Discrim. 515 .45 .37 .53 .42 .85 .83 .86 3.32 4.00 4.72
Line Estimation 193 .53 .42 .63 .53 .92 .90 .94 2.20 3.22 4.44
Liquid Equalization 348 .42 .32 .51 .41 .88 .85 .90 3.02 3.53 4.21
  1. Note: this table only includes data from the school cohort. Predictive validity was assessed by the linear Pearson correlation with teacher-rated academic ability, along with the lower and upper bounds of a 95% confidence interval (LB, UB). We also report the standardized regression coefficient (b*) for each task predicting academic ability whilst accounting for age and normalized neighborhood deprivation, in a multivariable regression performed separately for each task. The 10%, 50% (median) and 90% percentiles of time taken in minutes to complete each task are reported in the final three columns.