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. 2014 Apr 19;42(6):854–862. doi: 10.3758/s13421-014-0410-5

Table 1.

Number of participants (%) using different strategy types to complete memory tasks pre- and posttraining

Nonadaptive Adaptive No Intervention
Pre Post χ2 p V Pre Post χ2 p V Pre Post χ2 p V
Verbal short-term memory Rehearsal 14.29 14.29 0.00 1.00 .00 21.43 21.43 0.00 1.00 .00 13.33 20.00 1.78 .25 .09
Semantic 7.14 0.00 7.25 .01 .19 14.29 0.00 15.54 .00 .27 6.67 6.67 0.00 1.00 .00
Visualization 14.29 28.57 6.66 .15 .18 14.29 0.00 15.54 .00 .27 13.33 20.00 1.78 .25 .09
Grouping 21.43 28.57 1.71 .25 .09 28.57 71.43 35.28 .00 .42 26.67 26.67 0.00 1.00 .00
Rhythm 7.14 7.14 0.00 1.00 .00 7.14 7.14 0.00 1.00 0.00 0.00 0.00
Phonetically 7.14 7.14 0.00 1.00 .00 0.00 0.00 0.00 1.00 .00 6.67 0.00 7.25 .01 .19
Imagery 0.00 0.00 0.00 0.00 6.67 0.00 7.25 .01 .19
Visuospatial short-term memory Rehearsal 7.14 21.43 8.14 .01 .20 7.14 14.29 2.07 .17 .11 13.33 6.67 2.00 .24 −.10
Semantic 7.14 0.00 7.25 .01 .19 7.14 7.14 0.00 1.00 .00 6.67 6.67 0.00 1.00 .00
Visualization 57.14 35.71 8.86 .00 .21 64.29 28.57 24.62 .00 .35 60.00 53.33 1.00 .39 .07
Grouping 0.00 0.00 0.00 50.00 66.67 .00 .58 6.67 13.33 2.00 .24 .10
Imagery 0.00 7.14 7.25 .01 .19 0.00 0.00 0.00 0.00
Concentrate 0.00 7.14 7.25 .01 .19 0.00 0.00 0.00 0.00
Verbal recoding 0.00 7.14 7.25 .01 .19 14.29 21.43 1.70 .26 .09 0.00 6.67 7.25 .01 .19
Verbal working memory Rehearsal 14.29 14.29 0.00 1.00 .00 35.71 42.86 1.03 .39 .07 20.00 26.67 1.36 .32 .05
Semantic 7.14 0.00 7.25 .01 .19 7.14 0.00 7.25 .01 .19 0.00 0.00 0.00 1.00 .00
Visualization 28.57 35.71 1.12 .37 .08 21.43 14.29 1.70 .26 .09 26.67 46.67 8.85 .01 .21
Grouping 7.14 14.29 2.61 .17 .11 7.14 78.57 105.75 .00 .73 13.33 13.33 0.00 1.00 .00
Rhythm 7.14 0.00 7.25 .01 .19 0.00 7.14 7.25 .01 .19 6.67 0.00 7.25 .01 .19
Phonetically 7.14 0.00 7.25 .01 .19 0.00 0.00 13.33 0.00 13.90 .00 .26
Imagery 0.00 0.00 0.00 0.00 6.67 0.00 7.25 .01 .19
Concentrate 0.00 7.14 7.25 .01 .19 7.14 0.00 7.25 .01 .19 0.00 0.00
Speed 0.00 0.00 0.00 7.14 7.25 .01 .19 0.00 0.00
Visuospatial working memory Rehearsal 0.00 7.14 7.25 .01 .19 0.00 0.00 6.67 6.67 0.00 1.00 .00
Semantic 14.29 7.14 2.61 .17 .11 21.43 14.29 1.70 .26 .09 20.00 13.33 1.78 .25 .09
Visualization 28.57 21.43 1.71 .25 .09 14.29 14.29 0.00 1.00 .00 26.67 20.00 1.36 .32 .08
Chunking 0.00 0.00 0.00 0.00 0.00 13.33 13.90 .00 .26
Imagery 7.14 7.14 0.00 1.00 .00 0.00 0.00 0.00 0.00
Concentrate 0.00 0.00 7.14 0.00 7.25 .01 .19 6.67 0.00 7.25 .01 .19
Verbal recoding 0.00 0.00 7.14 0.00 7.25 .01 .19 0.00 0.00
Inhibiting 0.00 0.00 0.00 0.00 6.67 0.00 7.25 .01 .19

Note. V = Cramer’s V effect sizes: .1 = small, .3 = medium, .5 = large. Statistics not performed when strategy not reported at pre- or posttest