Working memory, reasoning, and task switching training: Transfer effects, limitations, and great expectations?

PLoS ONE

Volumn 10, Issue 11, 2015, Pages

  Baniqued, Pauline L ^a   Allen, Courtney M ^a   Kranz, Michael B ^a   Johnson, Kathryn ^a   Sipolins, Aldis ^a   Dickens, Charles ^b   Ward, Nathan ^a   Geyer, Alexandra ^b   Kramer, Arthur F ^a  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

^b APTIMA INC   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CONTROL GROUP; CONTROLLED STUDY; EPISODIC MEMORY; EXECUTIVE FUNCTION; EXPECTANCY; EXPECTATION; HUMAN; INTELLIGENCE; LIQUID; MAJOR CLINICAL STUDY; N-BACK TEST; PROBLEM SOLVING; REACTION TIME; SELECTIVE ATTENTION; TRAINING; VELOCITY; VIDEORECORDING; WORKING MEMORY; ADOLESCENT; ADULT; COGNITION; FEMALE; MALE; NUCLEAR MAGNETIC RESONANCE IMAGING; SHORT TERM MEMORY; TASK PERFORMANCE; YOUNG ADULT;

ADOLESCENT; ADULT; COGNITION; FEMALE; HUMANS; MAGNETIC RESONANCE IMAGING; MALE; MEMORY, SHORT-TERM; TASK PERFORMANCE AND ANALYSIS; YOUNG ADULT;

EID: 84953255738     PISSN: None     EISSN: 19326203     Source Type: Journal    
DOI: 10.1371/journal.pone.0142169     Document Type: Article

References (135)

1. Boot WR, Kramer AF. The brain-games conundrum: Does cognitive training really sharpen the mind? Cerebrum. 2014; 2014: 15.
2. Schubert T, Strobach T, Karbach J. New directions in cognitive training: on methods, transfer, and application. Psychol Res. 2014; 78(6): 749-755. doi: 10.1007/s00426-014-0619-8
3. Jolles DD, Crone EA. Training the developing brain: a neurocognitive perspective. Front Hum Neurosci. 2012; 6: 76. doi: 10.3389/fnhum.2012.00076
4. Hertzog C, Kramer AF, Wilson RS, Lindenberger U. Enrichment effects on adult cognitive development can the functional capacity of older adults be preserved and enhanced? Psychol Sci Public Interest. 2008; 9(1): 1-65. doi: 10.1111/j.1539-6053.2009.01034.x
5. Gray JR, Thompson PM. Neurobiology of intelligence: science and ethics. Nat Rev Neurosci. 2004; 5 (6): 471-482. doi: 10.1038/nrn1405
6. Gottfredson LS. Why g matters: The complexity of everyday life. Intelligence. 1997; 24: 79-132. doi: 10.1016/S0160-2896(97)90014-3
7. Colom R, Escorial S, Shih PC, Privado J. Fluid intelligence, memory span, and temperament difficulties predict academic performance of youn adolescents. Pers Individ Dif. 2007; 42(8): 1503-1514. doi: 10.1016/j.paid.2006.10.023
8. Rueda MR, Rothbart MK, McCandliss BD, Saccomanno L, Posner MI. Training, maturation, and genetic influences on the development of executive attention. Proc Natl Acad Sci U S A. 2005; 102 (41): 14931-14936. doi: 10.1073/pnas.0506897102
9. Thorell LB, Lindqvist S, Bergman Nutley S, Bohlin G, Klingberg T. Training and transfer effects of executive functions in preschool children. Dev Sci. 2009; 12(1): 106-113. doi: 10.1111/j.1467-7687. 2008.00745.x
10. Rueda MR, Checa P, Cómbita LM. Enhanced efficiency of the executive attention network after training in preschool children: immediate changes and effects after two months. Dev Cogn Neurosci. 2012; 2: S192-S204. doi: 10.1016/j.dcn.2011.09.004
11. Bergman Nutley S, Söderqvist S, Bryde S, Thorell LB, Humphreys K, Klingberg T. Gains in fluid intelligence after training non-verbal reasoning in 4-year-old children: a controlled, randomized study. Dev Sci. 2011; 14(3): 591-601. doi: 10.1111/j.1467-7687.2010.01022.x
12. Jaeggi SM, Buschkuehl M, Jonides J, Shah P. Short-And long-Term benefits of cognitive training. Proc Natl Acad Sci U S A. 2011; 108(25): 10081-10086. doi: 10.1073/pnas.1103228108
13. Loosli SV, Buschkuehl M, Perrig WJ, Jaeggi SM. Working memory training improves reading processes in typically developing children. Child Neuropsychol. 2012; 18(1): 62-78. doi: 10.1080/09297049.2011.575772
14. Mackey AP, Hill SS, Stone SI, Bunge SA. Differential effects of reasoning and speed training in children. Dev Sci. 2011; 14(3): 582-590. doi: 10.1111/j.1467-7687.2010.01005.x
15. Kirk H, Gray K, Riby D, Cornish K. Cognitive training as a resolution for early executive function difficulties in children with intellectual disabilities. Res Dev Disabil. 2015; 38: 145-160. doi: 10.1016/j. ridd.2014.12.026
16. Klingberg T, Fernell E, Olesen PJ, Johnson M, Gustafsson P, Dahlström K, et al. Computerized training of working memory in children with ADHD-A randomized, controlled trial. J Am Acad Child Adolesc Psychiatry. 2005; 44(2): 177-186. doi: 10.1097/00004583-200502000-00010
17. Holmes J, Gathercole SE, Dunning DL. Adaptive training leads to sustained enhancement of poor working memory in children. Dev Sci. 2009; 12(4): F9-F15. doi: 10.1111/j.1467-7687.2009.00848.x
18. Dunning DL, Holmes J, Gathercole SE. Does working memory training lead to generalized improvements in children with low working memory? A randomized controlled trial. Dev Sci. 2013; 16(6): 915-925. doi: 10.1111/desc.12068
19. Klingberg T, Forssberg H, Westerberg H. Training of working memory in children with ADHD. J Clin Exp Neuropsychol. 2002; 24(6): 781-791. doi: 10.1076/jcen.24.6.781.8395
20. Olesen PJ, Westerberg H, Klingberg T. Increased prefrontal and parietal activity after training of working memory. Nat Neurosci. 2004; 7(1): 75-79. doi: 10.1038/nn1165
21. Jaeggi SM, Buschkuehl M, Jonides J, Perrig WJ. Improving fluid intelligence with training on working memory. Proc Natl Acad Sci U S A. 2008; 105(19): 6829-6833. doi: 10.1073/pnas.0801268105
22. Karbach J, Kray J. How useful is executive control training? Age differences in near and far transfer of task-switching training. Dev Sci. 2009; 12(6): 978-990. doi: 10.1111/j.1467-7687.2009.00846.x
23. Willis SL, Schaie KW. Training the elderly on the ability factors of spatial orientation and inductive reasoning. Psychol Aging. 1986; 1(3): 239-247.
24. Dahlin E, Neely AS, Larsson A, Bäckman L, Nyberg L. Transfer of learning after updating training mediated by the striatum. Science. 2008; 320(5882): 1510-1512. doi: 10.1126/science.1155466
25. Dahlin E, Nyberg L, Bäckman L, Neely AS. Plasticity of executive functioning in young and older adults: immediate training gains, transfer, and long-Term maintenance. Psychol Aging. 2008; 23(4): 720-730. doi: 10.1037/a0014296
26. Klingberg T. Training and plasticity of working memory. Trends Cogn Sci. 2010; 14(7): 317-324. doi: 10.1016/j.tics.2010.05.002
27. Morrison AB, Chein JM. Does working memory training work? The promise and challenges of enhancing cognition by training working memory. Psychon Bull Rev. 2011; 18(1): 46-60. doi: 10.3758/s13423-010-0034-0
28. Harrison TL, Shipstead Z, Hicks KL, Hambrick DZ, Redick TS, Engle RW. Working memory training may increase working memory capacity but not fluid intelligence. Psychol Sci. 2013; 24(12): 2409-2419. doi: 10.1177/0956797613492984
29. Boot WR, Blakely DP, Simons DJ. Do action video games improve perception and cognition? Front Psychol. 2011; 2: 226. doi: 10.3389/fpsyg.2011.00226
30. Boot WR, Simons DJ, Stothart C, Stutts C. The pervasive problem with placebos in psychology: why active control groups are not sufficient to rule out placebo effects. Perspect Psychol Sci. 2013; 8(4): 445-454. doi: 10.1177/1745691613491271
31. Shipstead Z, Redick TS, Engle RW. Is working memory training effective? Psychol Bull. 2012; 138 (4): 628-654. doi: 10.1037/a0027473
32. Redick TS, Shipstead Z, Harrison TL, Hicks KL, Fried DE, Hambrick DZ, et al. No evidence of intelligence improvement after working memory training: a randomized, placebo-controlled study. J Exp Psychol Gen. 2013; 142(2): 359-379. doi: 10.1037/a0029082
33. Kundu B, Sutterer DW, Emrich SM, Postle BR. Strengthened effective connectivity underlies transfer of working memory training to tests of short-Term memory and attention. J Neurosci. 2013; 33(20): 8705-8715. doi: 10.1523/JNEUROSCI.5565-12.2013
34. Thompson TW, Waskom ML, Garel KA, Cardenas-Iniguez C, Reynolds GO, Winter R, et al. Failure of working memory training to enhance cognition or intelligence. PLoS One. 2013; 8(5): e63614. doi: 10. 1371/journal.pone.0063614
35. Sprenger AM, Atkins SM, Bolger DJ, Harbison JI, Novick JM, Chrabaszcz JS, et al. Training working memory: limits of transfer. Intelligence. 2013; 41(5): 638-663. doi: 10.1016/j.intell.2013.07.013
36. Schweizer S, Hampshire A, Dalgleish T. Extending brain-Training to the affective domain: increasing cognitive and affective executive control through emotional working memory training. PLoS One. 2011; 6(9): e24372. doi: 10.1371/journal.pone.0024372
37. Stephenson CL, Halpern DF. Improved matrix reasoning is limited to training on tasks with a visuospatial component. Intelligence. 2013; 41(5): 341-357. doi: 10.1016/j.intell.2013.05.006
38. Au J, Sheehan E, Tsai N, Duncan GJ, Buschkuehl M, Jaeggi SM. Improving fluid intelligence with training on working memory: a meta-Analysis. Psychon Bull Rev. 2014; 22(2): 366-377. doi: 10.3758/s13423-014-0699-x
39. Karbach J, Verhaeghen P. Making working memory work: a meta-Analysis of executive-control and working memory training in older adults. Psychol Sci. 2014; 25(11): 2027-2037. doi: 10.1177/0956797614548725
40. Lampit A, Hallock H, Valenzuela M. Computerized cognitive training in cognitively healthy older adults: a systematic review and meta-Analysis of effect modifiers. PLoS Med. 2014; 11(11): e1001756. doi: 10.1371/journal.pmed.1001756
41. Dougherty MR, Hamovitz T, Tidwell JW. Reevaluating the effectiveness of n-back training on transfer through the Bayesian lens: Support for the null. Psychon Bull Rev. 2015; In press.
42. Melby-Lervag M, Hulme C. There is no convincing evidence that working memory training is effective: a reply to Au et al. (2014) and Karbach and Verhaeghen (2014). Psychon Bull Rev. 2015; In press.
43. Ball K, Berch DB, Helmers KF, Jobe JB, Leveck MD, Marsiske M, et al. Effects of cognitive training interventions with older adults: a randomized controlled trial. JAMA. 2002; 288(18): 2271-2281. doi: 10.1001/jama.288.18.2271
44. Willis SL, Tennstedt SL, Marsiske M, Ball K, Elias J, Koepke KM, et al. Long-Term effects of cognitive training on everyday functional outcomes in older adults. JAMA. 2006; 296(23): 2805-2814. doi: 10. 1001/jama.296.23.2805
45. Green CS, Bavelier D. Exercising your brain: a review of human brain plasticity and training-induced learning. Psychol Aging. 2008; 23(4): 692-701. doi: 10.1037/a0014345
46. Ackerman PL, Kanfer R, Calderwood C. Use it or lose it? Wii brain exercise practice and reading for domain knowledge. Psychol Aging. 2010; 25(4): 753-766. doi: 10.1037/a0019277
47. Boot WR, Basak C, Erickson KI, Neider M, Simons DJ, Fabiani M, et al. Transfer of skill engendered by complex task training under conditions of variable priority. Acta Psychol (Amst). 2010; 135(3): 349-357. doi: 10.1016/j.actpsy.2010.09.005
48. Owen AM, Hampshire A, Grahn JA, Stenton R, Dajani S, Burns AS, et al. Putting brain training to the test. Nature. 2010; 465(7299): 775-778. doi: 10.1038/nature09042
49. Lee H, Boot WR, Basak C, Voss MW, Prakash RS, Neider M, et al. Performance gains from directed training do not transfer to untrained tasks. Acta Psychol (Amst). 2012; 139(1): 146-158. doi: 10.1016/j.actpsy.2011.11.003
50. Schubert T, Finke K, Redel P, Kluckow S, Müller H, Strobach T. Video game experience and its influence on visual attention parameters: an investigation using the framework of the Theory of Visual Attention (TVA). Acta Psychol (Amst). 2015; 157: 200-214. doi: 10.1016/j.actpsy.2015.03.005
51. Schmiedek F, Lovden M, Lindenberger U. Hundred days of cognitive training enhance broad cognitive abilities in adulthood: findings from the COGITO study. Front Aging Neurosci. 2010; 2: 27. doi: 10. 3389/fnagi.2010.00027
52. Bavelier D, Green CS, Pouget A, Schrater P. Brain plasticity through the life span: learning to learn and action video games. Annu Rev Neurosci. 2012; 35: 391-416. doi: 10.1146/annurev-neuro-060909-152832
53. Oei AC, Patterson MD. Enhancing cognition with video games: a multiple game training study. PLoS One. 2013; 8(3): e58546. doi: 10.1371/journal.pone.0058546
54. Baniqued PL, Kranz MB, Voss MW, Lee H, Cosman JD, Severson J, et al. Cognitive training with casual video games: points to consider. Front Psychol. 2014; 4: 1010. doi: 10.3389/fpsyg.2013. 01010
55. Lampit A, Ebster C, Valenzuela M. Multi-domain computerized cognitive training program improves performance of bookkeeping tasks: a matched-sampling active-controlled trial. Front Psychol. 2014; 5: 794. doi: 10.3389/fpsyg.2014.00794
56. van Muijden J, Band GP, Hommel B. Online games training aging brains: limited transfer to cognitive control functions. Front Hum Neurosci. 2012; 6: 221. doi: 10.3389/fnhum.2012.00221
57. von Bastian CC, Langer N, Jäncke L, Oberauer K. Effects of working memory training in young and old adults. Mem Cognit. 2013; 41(4): 611-624. doi: 10.3758/s13421-012-0280-7
58. Gaspar JG, Neider MB, Simons DJ, McCarley JS, Kramer AF. Change detection: training and transfer. PLoS One. 2013; 8(6): e67781. doi: 10.1371/journal.pone.0067781
59. Salthouse TA. Relations between cognitive abilities and measures of executive functioning. Neuropsychology. 2005; 19(4): 532-545. doi: 10.1037/0894-4105.19.4.532
60. Redick TS, Unsworth N, Kelly AJ, Engle RW. Faster, smarter? Working memory capacity and perceptual speed in relation to fluid intelligence. J Cogn Psychol (Hove). 2012; 24(7): 844-854.
61. Salthouse TA, Ferrer-Caja E. What needs to be explained to account for age-related effects on multiple cognitive variables? Psychol Aging. 2003; 18(1): 91-110.
62. Shipstead Z, Harrison TL, Engle RW. Working memory capacity and visual attention: top-down and bottom-up guidance. Q J Exp Psychol (Hove). 2012; 65(3): 401-407. doi: 10.1080/17470218.2012. 655698
63. Jensen AR. How much can we boost IQ and scholastic achievement? Harv Educ Rev. 1969; 39(1): 1-123.
64. Schaie KW. What can we learn from longitudinal studies of adult development? Res Hum Dev. 2005; 2(3): 133-158. doi: 10.1207/s15427617rhd0203-4
65. Salthouse TA. When does age-related cognitive decline begin? Neurobiol Aging. 2009; 30(4): 507-514. doi: 10.1016/j.neurobiolaging.2008.09.023
66. Godin G, Shephard R. Godin leisure-Time exercise questionnaire. Med Sci Sports Exerc. 1997; 29 (6s): S36-S38.
67. Kane MJ, Poole BJ, Tuholski SW, Engle RW. Working memory capacity and the top-down control of visual search: exploring the boundaries of "executive attention". J Exp Psychol Learn Mem Cogn. 2006; 32(4): 749-777. doi: 10.1037/0278-7393.32.4.749
68. Poole BJ, Kane MJ. Working-memory capacity predicts the executive control of visual search among distractors: the influences of sustained and selective attention. Q J Exp Psychol (Hove). 2009; 62(7): 1430-1454. doi: 10.1080/17470210802479329
69. Schneider W, Eschman A, Zuccolotto A. E-Prime user's guide. Pittsburgh: Psychology Software Tools Inc.; 2002.
70. Brainard DH. The psychophysics toolbox. Spat Vis. 1997; 10: 433-436. doi: 10.1163/156856897X00357
71. Pelli DG. The VideoToolbox software for visual psychophysics: transforming numbers into movies. Spat Vis. 1997; 10: 437-442. doi: 10.1163/156856897X00366
72. Zachary RA. Shipley institute of living scale: revised manual. Los Angeles: Western Psychological Services; 1986.
73. Ravens J. Advanced progressive matrices: Set II. London: H.K. Lewis; 1962.
74. Crone EA, Wendelken C, van Leijenhorst L, Honomichl RD, Christoff K, Bunge SA. Neurocognitive development of relational reasoning. Dev Sci. 2009; 12(1): 55-66. doi: 10.1111/j.1467-7687.2008. 00743.x
75. Ekstrom RB, French JW, Harman HH, Dermen D. Manual for kit of factor referenced cognitive tests. Princeton: Educational Testing Service; 1976.
76. Bennett GK, Seashore HG, Wesman AG. Differential aptitude tests. San Antonio: The Psychological Corporation; 1947.
77. Wechsler D. WAIS-III: Wechsler adult intelligence scale. San Antonio: The Psychological Corporation; 1997.
78. Salthouse TA, Babcock RL. Decomposing adult age differences in working memory. Dev Psychol. 1991; 27(5): 763-776. doi: 10.1037/0012-1649.27.5.763
79. Wechsler D. Wechsler memory scale (WMS-III). San Antonio: The Psychological Corporation; 1997.
80. Salthouse TA, Fristoe N, Rhee SH. How localized are age-related effects on neuropsychological measures? Neuropsychology. 1996; 10(2): 272-285. doi: 10.1037/0894-4105.10.2.272
81. Watson PD, Voss JL, Warren DE, Tranel D, Cohen NJ. Spatial reconstruction by patients with hippocampal damage is dominated by relational memory errors. Hippocampus. 2013; 23(7): 570-580. doi: 10.1002/hipo.22115
82. Monti JM, Cooke GE, Watson PD, Voss MW, Kramer AF, Cohen NJ. Relating hippocampus to relational memory processing across domains and delays. J Cogn Neurosci. 2015; 27(2): 234-245. doi: 10.1162/jocn-a-00717
83. Broadway JM, Engle RW. Validating running memory span: Measurement of working memory capacity and links with fluid intelligence. Behav Res Methods. 2010; 42(2): 563-570. doi: 10.3758/BRM.42. 2.563
84. Turner ML, Engle RW. Is working memory capacity task dependent? J Mem Lang. 1989; 28(2): 127-154. doi: 10.1016/0749-596X(89)90040-5
85. Unsworth N, Heitz RP, Schrock JC, Engle RW. An automated version of the operation span task. Behav Res Methods. 2005; 37(3): 498-505. doi: 10.3758/BF03192720
86. Redick TS, Broadway JM, Meier ME, Kuriakose PS, Unsworth N, Kane MJ, et al. Measuring working memory capacity with automated complex span tasks. Eur J Psychol Assess. 2012; 28(3): 164-171. doi: 10.1027/1015-5759/a000123
87. Keshvari S, van den Berg R, Ma WJ. No evidence for an item limit in change detection. PLoS Comput Biol. 2013; 9(2): e1002927. doi: 10.1371/journal.pcbi.1002927
88. Luck SJ, Vogel EK. The capacity of visual working memory for features and conjunctions. Nature. 1997; 390(6657): 279-281. doi: 10.1038/36846
89. Kirchner WK. Age differences in short-Term retention of rapidly changing information. J Exp Psychol. 1958; 55(4): 352-358. doi: 10.1037/h0043688
90. Kane MJ, Conway AR, Miura TK, Colflesh GJ. Working memory, attention control, and the N-back task: a question of construct validity. J Exp Psychol Learn Mem Cogn. 2007; 33(3): 615-622. doi: 10. 1037/0278-7393.33.3.615
91. Jaeggi SM, Seewer R, Nirkko AC, Eckstein D, Schroth G, Groner R, et al. Does excessive memory load attenuate activation in the prefrontal cortex? Load-dependent processing in single and dual tasks: functional magnetic resonance imaging study. Neuroimage. 2003; 19(2): 210-225. doi: 10. 1016/S1053-8119(03)00098-3
92. Jaeggi SM, Buschkuehl M, Etienne A, Ozdoba C, Perrig WJ, Nirkko AC. On how high performers keep cool brains in situations of cognitive overload. Cogn Affect Behav Neurosci. 2007; 7(2): 75-89. doi: 10.3758/CABN.7.2.75
93. Reitan RM. Validity of the trail making test as an indicator of organic brain damage. Percept Mot Skills. 1958; 8(3): 271-276. doi: 10.2466/pms.1958.8.3.271
94. Raymond JE, Shapiro KL, Arnell KM. Temporary suppression of visual processing in an RSVP task: an attentional blink? J Exp Psychol Hum Percept Perform. 1992; 18(3): 849-860. doi: 10.1037/0096-1523.18.3.849
95. Armor Games [Internet]. [Place Unknown]: Armor Games; 2005-2015. Available: http://armorgames. com/play/2963/dodge. Accessed 2015 Oct 25.
96. Unsworth N, Spillers GJ. Working memory capacity: attention control, secondary memory, or both? A direct test of the dual-component model. J Mem Lang. 2010; 62(4): 392-406. doi: 10.1016/j.jml.2010. 02.001
97. Eriksen BA, Eriksen CW. Effects of noise letters upon the identification of a target letter in a nonsearch task. Percept Psychophys. 1974; 16(1): 143-149. doi: 10.3758/BF03203267
98. Kane MJ, Bleckley MK, Conway AR, Engle RW. A controlled-Attention view of working-memory capacity. J Exp Psychol Gen. 2001; 130(2): 169-183. doi: 10.1037/0096-3445.130.2.169
99. Hallett P. Primary and secondary saccades to goals defined by instructions. Vision Res. 1978; 18 (10): 1279-1296. doi: 10.1016/0042-6989(78)90218-3 PMID: 726270
100. Dinges DF, Powell JW. Microcomputer analyses of performance on a portable, simple visual RT task during sustained operations. Behav Res Methods Instrum Comput. 1985; 17(6): 652-655. doi: 10. 3758/BF03200977
101. Fitzgerald KD, Perkins SC, Angstadt M, Johnson T, Stern ER, Welsh RC, et al. The development of performance-monitoring function in the posterior medial frontal cortex. Neuroimage. 2010; 49(4): 3463-3473. doi: 10.1016/j.neuroimage.2009.11.004
102. Bush G, Shin L, Holmes J, Rosen B, Vogt B. The multi-source interference task: validation study with fMRI in individual subjects. Mol Psychiatry. 2003; 8(1): 60-70. doi: 10.1038/sj.mp.4001217
103. Platina Games [Internet]. [Place Unknown]: platinagames.com; 2010. Available: http://www. platinagames.com/game2.html. Accessed 2015 Oct 25.
104. Costa R, Medeiros-Ward N, Halper N, Helm L, Maloney A. The shifting and dividing of attention between visual and auditory tasks. J Vis. 2012; 12(9): 1032. doi: 10.1167/12.9.1032
105. Cowan N. Metatheory of storage capacity limits. Behav Brain Sci. 2001; 24(01): 154-176.
106. John OP, Donahue EM, Kentle RL. The big five inventory-versions 4a and 54. Berkeley: University of California, Berkeley, Institute of Personality and Social Research; 1991.
107. Duckworth AL, Peterson C, Matthews MD, Kelly DR. Grit: perseverance and passion for long-Term goals. J Pers Soc Psychol. 2007; 92(6): 1087-1101. doi: 10.1037/0022-3514.92.6.1087
108. Kecklund G, Akerstedt T. The psychometric properties of the Karolinska Sleep Questionnaire. J Sleep Res. 1992; 1(Suppl 1): 113.
109. Buysse DJ, Reynolds CF, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and research. Psychiatry Res. 1989; 28(2): 193-213. doi: 10. 1016/0165-1781(89)90047-4
110. Jurca R, Jackson AS, LaMonte MJ, Morrow JR, Blair SN, Wareham NJ, et al. Assessing cardiorespiratory fitness without performing exercise testing. Am J Prev Med. 2005; 29(3): 185-193. doi: 10. 1016/j.amepre.2005.06.004
111. Ophir E, Nass C, Wagner AD. Cognitive control in media multitaskers. Proc Natl Acad Sci U S A. 2009; 106(37): 15583-15587. doi: 10.1073/pnas.0903620106
112. Chein JM, Morrison AB. Expanding the mind's workspace: training and transfer effects with a complex working memory span task. Psychon Bull Rev. 2010; 17(2): 193-199. doi: 10.3758/PBR.17.2.193
113. Novick JM, Hussey E, Teubner-Rhodes S, Harbison JI, Bunting MF. Clearing the garden-path: improving sentence processing through cognitive control training. Lang Cogn and Neurosci. 2014; 29 (2): 186-217. doi: 10.1080/01690965.2012.758297
114. Gray JR, Chabris CF, Braver TS. Neural mechanisms of general fluid intelligence. Nat Neurosci. 2003; 6(3): 316-322. doi: 10.1038/nn1014
115. Coderre EL, van Heuven WJ. The effect of script similarity on executive control in bilinguals. Front Psychol. 2014; 5: 1070. doi: 10.3389/fpsyg.2014.01070
116. von Bastian CC, Eschen A. Does working memory training have to be adaptive? Psychol Res. 2015; In press.
117. Baayen RH, Davidson DJ, Bates DM. Mixed-effects modeling with crossed random effects for subjects and items. J Mem Lang. 2008; 59(4): 390-412. doi: 10.1016/j.jml.2007.12.005
118. Bates D, Maechler M, Bolker BM, Walker S. Fitting linear mixed-effects models using lme4. J Stat Softw. 2015; 67(1): 1-48. doi: 10.18637/jss.v067.i01
119. Halekoh U, Højsgaard S. A Kenward-Roger approximation and parametric bootstrap methods for tests in linear mixed models-The R package pbkrtest. J Stat Softw. 2014; 59(9): 1-32. doi: 10.18637/jss.v059.i09
120. Rouder JN, Speckman PL, Sun D, Morey RD, Iverson G. Bayesian t tests for accepting and rejecting the null hypothesis. Psychon Bull Rev. 2009; 16(2): 225-237. doi: 10.3758/PBR.16.2.225
121. Efron B. Better bootstrap confidence intervals. J Am Stat Assoc. 1987; 82(397): 171-185. doi: 10. 1080/01621459.1987.10478410
122. Lovden M, Brehmer Y, Li SC, Lindenberger U. Training-induced compensation versus magnification of individual differences in memory performance. Front Hum Neurosci. 2012; 6: 141. doi: 10.3389/fnhum.2012.00141
123. Brehmer Y, Westerberg H, Bäckman L. Working-memory training in younger and older adults: training gains, transfer, and maintenance. Front Hum Neurosci. 2012; 6: 63. doi: 10.3389/fnhum.2012.00063
124. Stothart CR, Simons DJ, Boot WR, Kramer AF. Is the effect of aerobic exercise on cognition a placebo effect? PLoS One. 2014; 9(10): e109557. doi: 10.1371/journal.pone.0109557
125. Horn JL, Cattell RB. Age differences in fluid and crystallized intelligence. Acta Psychol (Amst). 1967; 26: 107-129. doi: 10.1016/0001-6918(67)90011-X
126. Raven J, Raven J, Court J. Manual for Raven's Progressive Matrices and Vocabulary Scales. Oxford: Oxford Psychologists Press; 1998.
127. Salthouse TA, Pink JE, Tucker-Drob EM. Contextual analysis of fluid intelligence. Intelligence. 2008; 36(5): 464-486. doi: 10.1016/j.intell.2007.10.003
128. Jaeggi SM, Studer-Luethi B, Buschkuehl M, Su Y, Jonides J, Perrig WJ. The relationship between nback performance and matrix reasoning-implications for training and transfer. Intelligence. 2010; 38 (6): 625-635. doi: 10.1016/j.intell.2010.09.001
129. Moody DE. Can intelligence be increased by training on a task of working memory? Intelligence. 2009; 37(4): 327-328.
130. Kramer AF, Hahn S, Cohen NJ, Banich MT, McAuley E, Harrison CR, et al. Ageing, fitness and neurocognitive function. Nature. 1999; 400(6743): 418-419. doi: 10.1038/22682
131. Hillman CH, Erickson KI, Kramer AF. Be smart, exercise your heart: Exercise effects on brain and cognition. Nat Rev Neurosci. 2008; 9(1): 58-65. doi: 10.1038/nrn2298
132. Jaeggi SM, Buschkuehl M, Shah P, Jonides J. The role of individual differences in cognitive training and transfer. Mem Cognit. 2014; 42(3): 464-480. doi: 10.3758/s13421-013-0364-z
133. Studer-Luethi B, Jaeggi SM, Buschkuehl M, Perrig WJ. Influence of neuroticism and conscientiousness on working memory training outcome. Pers Individ Dif. 2012; 53(1): 44-49. doi: 10.1016/j.paid. 2012.02.012
134. Basak C, Voss MW, Erickson KI, Boot WR, Kramer AF. Regional differences in brain volume predict the acquisition of skill in a complex real-Time strategy videogame. Brain Cogn. 2011; 76(3): 407-414. doi: 10.1016/j.bandc.2011.03.017
135. Erickson KI, Boot WR, Basak C, Neider MB, Prakash RS, Voss MW, et al. Striatal volume predicts level of video game skill acquisition. Cereb Cortex. 2010; 20(11): 2522-2530. doi: 10.1093/cercor/bhp293