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Correction to: Effectiveness of working memory training among children with dyscalculia: evidence for transfer effects on mathematical achievement—a pilot study

  • Smail LayesEmail author
  • Robert Lalonde
  • Yamina Bouakkaz
  • Mohamed Rebai
Correction
  • 34 Downloads

Correction to: Cognitive Processing (2018) 19:375–385  https://doi.org/10.1007/s10339-017-0853-2

The following errors require correction in the article. The authors apologize for these errors.
  1. 1.

    In the abstract, the term “dyslexia” should be replaced by the term “dyscalculia”. Furthermore, the mean age of the experimental group was not “129.74 months” but “115.29 months”, whereas the mean age of the control group was not “126.9 months” but “116.07 months”.

     
  2. 2.

    In the section “Participants” the mean ages of the experimental group and of the control group should accordingly be replaced by “115.29 months (SD = 3.60 months)” and “116.07 months (SD = 1.07 months)”, respectively.

     
  3. 3.

    In the section “Training Effects”, t (2.05) should be replaced by t (26), and t (15) should be replaced by t (13).

     
  4. 4.
    In Table 2, the titles “Control group” and “Experimental group” should be swapped, and the title “Difference (= 2.05) (ns)” should be replaced by “Difference, t (26)”. In the row “Age”, “M = 116.00, SD = .00” should be replaced by “M = 116.07, SD = 1.07”, and “t = − .74” should be replaced by “t = .78”. In the row “Mental calculation”, “M = 9.43, SD 1.15” should be replaced by “M  = 9.57, SD = 1.08”. The correct table is reproduced below.
    Table 2

    Differences between the experimental and control groups in pre-intervention measures

    Measures

    Control group

    Experimental group

    Difference t (26) (ns)

    M

    SD

    M

    SD

    Age

    116.07

    1.07

    115.29

    3.60

    .78

    Raven

    28.57

    .64

    28.71

    3.70

    .14

    Counting backward

    2.50

    .51

    2.36

    1.00

    .47

    Dictation of number

    8.71

    .46

    9.00

    1.30

    .77

    Mental calculation

    9.57

    1.08

    9.57

    2.06

    .22

    Reading numbers

    9.43

    .51

    9.29

    3.19

    .16

    Writ. number comparison

    7.36

    .49

    7.07

    1.20

    .81

    Total Math

    37.57

    1.39

    37.29

    5.26

    .19

    Forward digit span

    6.14

    .86

    5.86

    .77

    .92

    Backward digit span

    4.71

    .46

    4.86

    .66

    .65

    Total WM

    10.86

    .86

    10.71

    1.13

    .37

     
  5. 5.
    In Table 3, the titles “Control group” and “Experimental group” should be swapped. In the row “Dictation of number”, Cohen’s d “0.25” should be replaced by “2.50”. In the row “Total math”, “M = 38.36, SD = 1.59” should be replaced by “M = 38.57, SD = 1.82”. The correct table is reproduced below.
    Table 3

    Differences between the experimental and control groups in post-intervention measures

    Measures

    Control group

    Experimental group

    Difference (t = 2.05)

    Cohen’s d

    M

    (SD)

    M

    (SD)

    Raven

    29.00

    .68

    30.64

    2.40

    2.24*

    0.85

    Counting backward

    2.57

    .51

    3.93

    .26

    8.77***

    3.35

    Dictation of numbers

    8.86

    .66

    12.86

    2.17

    6.57***

    2.50

    Mental calculation

    9.64

    1.21

    13.29

    1.49

    7.08***

    2.68

    Reading numbers

    9.71

    .61

    12.71

    .99

    9.61***

    3.64

    Writ. number comparison

    7.57

    .51

    8.71

    .46

    6.15***

    2.34

    Total Math

    38.57

    1.82

    51.50

    4.20

    10.93***

    4.38

    Forward digit span

    6.29

    .91

    9.86

    1.29

    8.44***

    3.19

    Backward digit span

    4.93

    .26

    9.29

    1.63

    9.82***

    3.73

    Total WM

    11.21

    .89

    19.14

    2.59

    10.80***

    4.09

    p < .05; ** p < .01; *** p < .001

     
  6. 6.
    In Table 4, all negative values should be positive. In the row “Total math”, “− 1.00” should be replaced by “.79”. The correct table is reproduced below.
    Table 4

    Differences between pre- and post-intervention measures for the experimental and control groups

    Measures

    Control group

    Experimental group

    Difference

    t value

    Cohen’s d

    Difference

    t value

    Cohen’s d

    Raven

    .43

    2.48*

    0.65

    1.92

    3.22***

    0.61

    Counting backward

    .07

    .56

     

    1.57

    5.39***

    2.14

    Dictation of number

    .14

    .69

     

    3.85

    6.32***

    2.15

    Mental calculation

    .21

    .56

     

    3.71

    5.71***

    2.06

    Reading numbers

    .28

    2.28*

    0.49

    3.42

    3.53***

    1.44

    Writ. number comp

    .21

    1.38

     

    1.64

    5.34***

    1.80

    Total Math

    .79

    2.13

     

    14.21

    8.69***

    2.98

    Forward digit span

    .14

    .80

     

    4.00

    11.01***

    3.76

    Backward digit span

    .21

    1.88

     

    4.42

    11.01***

    3.56

    Total WM

    .35

    1.79

     

    8.42

    12.44***

    3.56

    p < .05; ** p < .01; *** p < .001

     

Notes

Copyright information

© Marta Olivetti Belardinelli and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Smail Layes
    • 1
    • 2
    Email author
  • Robert Lalonde
    • 2
    • 3
  • Yamina Bouakkaz
    • 1
  • Mohamed Rebai
    • 2
  1. 1.School of PsychologyUniversity of El-OuedEl-OuedAlgeria
  2. 2.CRFDP, Normandie UniversitéRouenFrance
  3. 3.UFR des Sciences de l’Homme et de la sociétéMont Saint Aignan CedexFrance

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