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Bilingualism enhances attentional control in non-verbal conflict tasks – evidence from ex-Gaussian analyses*

  • BEINAN ZHOU (a1) and ANDREA KROTT (a1)

Bilinguals have been found to possess cognitive advantages. But the nature of this advantage is unclear. While some evidence suggests that bilinguals have developed enhanced inhibitory control abilities, other evidence suggests that they possess enhanced attentional control abilities. In the current study, English monolingual and English–Chinese bilingual young adults were tested in three non-verbal conflict tasks (Flanker task, Spatial Stroop task and Simon task). Ex-Gaussian analyses were utilized to inspect response time distributions. The two participant groups showed comparable effects of stimulus-response congruency on the Gaussian part of response distributions (μ), but different effects on the distribution tails (τ), with reduced tails for bilingual speakers particularly in the more demanding incongruent condition. These results suggest that bilingual advantage emerges from better sustained attention and attentional monitoring rather than inhibition. We also discuss the usefulness of ex-Gaussian analyses.

Corresponding author
Address for correspondence: Andrea Krott, School of Psychology, University of Birmingham, Birmingham, B15 2TT, UK
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This research had been supported by a Small Grant from the Experimental Psychology Society. We would like to thank the Astronomy Club and the Social Service Team of the Chinese University of Hong Kong for providing their meeting rooms for testing. We are also grateful to Dr. Chi-Shing Tse for useful tips on ex-Gaussian analysis. Last but not least, we thank the anonymous reviewers for insightful comments to improve the quality of this manuscript.

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

E. Aarts , A. Roelofs , & M. van Turennout (2009). Attentional control of task and response in lateral and medial frontal cortex: Brain activity and reaction time distributions. Neuropsychologia, 47 (10), 20892099. doi: 10.1016/j.neuropsychologia.2009.03.019

J. Abutalebi , L. Guidi , V. Borsa , M. Canini , P. A. Della Rosa , B. A. Parris , & B. S. Weekes (2015). Bilingualism provides a neural reserve for aging populations. Neuropsychologia, 69, 201210. doi: 10.1016/j.neuropsychologia.2015.01.040

S. Andrews , & A. Heathcote (2001). Distinguishing common and task-specific processes in word identification: A matter of some moment? Journal of Experimental Psychology-Learning Memory and Cognition, 27 (2), 514540. doi: 10.1037//0278-7393.27.2.514

D. A. Balota , & D. H. Spieler (1999). Word frequency, repetition, and lexicality effects in word recognition tasks: Beyond measures of central tendency. Journal of Experimental Psychology-General, 128 (1), 3255. doi: 10.1037//0096-3445.128.1.32

D. A. Balota , & M. J. Yap (2011). Moving Beyond the Mean in Studies of Mental Chronometry: The Power of Response Time Distributional Analyses. Current Directions in Psychological Science, 20 (3), 160166. doi: 10.1177/0963721411408885

D. A. Balota , M. J. Yap , M. J. Cortese , & J. M. Watson (2008). Beyond mean response latency: Response time distributional analyses of semantic priming. Journal of Memory and Language, 59 (4), 495523. doi: 10.1016/j.jml.2007.10.004

E. Bialystok (2001). Bilingualism in development: Language, literacy and cognition. Cambridge, UK: Cambridge Universiry Press.

E. Bialystok (2006). Effect of bilingualism and computer video game experience on the Simon task. Canadian Journal of Experimental Psychology-Revue Canadienne de Psychologie Experimentale, 60 (1), 6879.

E. Bialystok , F. Craik , & G. Luk (2008). Cognitive control and lexical access in younger and older bilinguals. Journal of Experimental Psychology-Learning Memory and Cognition, 34 (4), 859873.

E. Bialystok , F. I. M. Craik , C. Grady , W. Chau , R. Ishii , A. Gunji , & C. Pantev (2005b). Effect of bilingualism on cognitive control in the Simon task: evidence from MEG. NeuroImage, 24 (1), 4049.

E. Bialystok , F. I. M. Craik , D. W. Green , & T. H. Gollan (2009). Bilingual minds. Psychological Science in the Public Interest, 10 (3), 89129.

E. Bialystok , F. I. M. Craik , R. Klein , & M. Viswanathan (2004). Bilingualism, aging, and cognitive control: Evidence from the Simon task. Psychology and Aging, 19 (2), 290303.

E. Bialystok , & A.-M. DePape (2009). Musical Expertise, Bilingualism, and Executive Functioning. Journal of Experimental Psychology-Human Perception and Performance, 35 (2), 565574. doi: 10.1037/a0012735

E. Bialystok , M. M. Martin , & M. Viswanathan (2005a). Bilingualism across the lifespan: The rise and fall of inhibitory control. International Journal of Bilingualism, 9 (1), 103119. doi: 10.1177/13670069050090010701

M. J. Blanco , & A. A. Alvarez (1994). Psychometric Intelligence and Visual focused Attention - Relationships in Nonsearch Tasks. Intelligence, 18 (1), 77106. doi: 10.1016/0160-2896(94)90021-3

H. K. Blumenfeld , & V. Marian (2014). Cognitive control in bilinguals: Advantages in Stimulus-Stimulus inhibition. Bilingualism-Language and Cognition, 17 (3), 610629. doi: 10.1017/s1366728913000564

M. Botvinick , T. S. Braver , D. M. Barch , C. S. Carter , & J. D. Cohen (2001). Conflict monitoring and cognitive control. Psychological Review, 108 (3), 624652. doi: 10.1037//0033-295x.108.3.624

M. Botvinick , L. E. Nystrom , K. Fissell , C. S. Carter , & J. D. Cohen (1999). Conflict monitoring versus selection-for-action in anterior cingulate cortex. Nature, 402 (6758), 179181. doi: 10.1038/46035

S. Brown , & A. Heathcote (2003). QMLE: Fast, robust, and efficient estimation of distribution functions based on quantiles. Behavior Research Methods Instruments & Computers, 35 (4), 485492. doi: 10.3758/bf03195527

M. Calabria , M. Hernandez , C. D. Martin , & A. Costa (2011). When the tail counts: the advantage of bilingualism through the ex-Gaussian distribution analysis. Frontiers in Psychology, 2, 8. doi: 10.3389/fpsyg.2011.00250

S. M. Carlson , & A. N. Meltzoff (2008). Bilingual experience and executive functioning in young children. Developmental Science, 11 (2), 282298. doi: 10.1111/j.1467-7687.2008.00675.x

L. S. Colzato , M. T. Bajo , W. van den Wildenberg , D. Paolieri , S. Nieuwenhuis , W. La Heij , & B. Hommel (2008). How does bilingualism improve executive control? A comparison of active and reactive inhibition mechanisms. Journal of Experimental Psychology-Learning Memory and Cognition, 34 (2), 302312.

A. Costa , M. Hernandez , J. Costa-Faidella , & N. Sebastian-Galles (2009). On the bilingual advantage in conflict processing: Now you see it, now you don't. Cognition, 113 (2), 135149.

A. Costa , M. Hernandez , & N. Sebastian-Galles (2008). Bilingualism aids conflict resolution: Evidence from the ANT task. Cognition, 106 (1), 5986.

A. de Bruin , B. Treccani , & S. Della Sala (2015). Cognitive Advantage in Bilingualism: An Example of Publication Bias? Psychological Science, 26 (1), 99107. doi: 10.1177/0956797614557866

G. de Zubicaray , K. McMahon , M. Eastburn , & A. Pringle (2006). Top-down influences on lexical selection during spoken word production: A 4T fMRI investigation of refractory effects in picture naming. Human Brain Mapping, 27 (11), 864873.

K. Emmorey , G. Luk , J. E. Pyers , & E. Bialystok (2008). The Source of Enhanced Cognitive Control in Bilinguals: Evidence From Bimodal Bilinguals. Psychological Science, 19 (12), 12011206. doi: 10.1111/j.1467-9280.2008.02224.x

P. Engel de Abreu , A. Cruz-Santos , C. J. Tourinho , R. Martin , & E. Bialystok (2012). Bilingualism Enriches the Poor: Enhanced Cognitive Control in Low-Income Minority Children. Psychological Science, 23 (11), 13641371. doi: 10.1177/0956797612443836

J. N. Epstein , J. M. Langberg , P. J. Rosen , A. Graham , M. E. Narad , T. N. Antonini , W. B. Brinkman , T. Froehlich , J. O. Simon , & M. Altaye (2011). Evidence for Higher Reaction Time Variability for Children With ADHD on a Range of Cognitive Tasks Including Reward and Event Rate Manipulations. Neuropsychology, 25 (4), 427441. doi: 10.1037/a0022155

B. A. Eriksen , & C. W. Eriksen (1974). Effects of Noise Letters Upon Identification of A Target Letter in A Nonsearch Task. Perception & Psychophysics, 16 (1), 143149.

G. Gratton , M. G. H. Coles , & E. Donchin (1992). Optimizing the Use of Information - Strategic Control of Activation of Responses. Journal of Experimental Psychology-General, 121 (4), 480506. doi: 10.1037//0096-3445.121.4.480

A. Heathcote , S. J. Popiel , & D. J. K. Mewhort (1991). Analysis of Response - Time Distributions - An Example Using the Stroop Task. Psychological Bulletin, 109 (2), 340347. doi: 10.1037/0033-2909.109.2.340

M. Hernandez , A. Costa , & G. W. Humphreys (2012). Escaping capture: Bilingualism modulates distraction from working memory. Cognition, 122 (1), 3750. doi: 10.1016/j.cognition.2011.08.002

A. S. Hervey , J. N. Epstein , J. F. Curry , S. Tonev , L. E. Arnold , C. K. Conners , S. P. Hinshaw , J. M. Swanson , & L. Hechtman (2006). Reaction time distribution analysis of neuropsychological performance in an ADHD sample. Child Neuropsychology, 12 (2), 125140. doi: 10.1080/09297040500499081

M. D. Hilchey , & R. M. Klein (2011). Are there bilingual advantages on nonlinguistic interference tasks? Implications for the plasticity of executive control processes. Psychonomic Bulletin & Review, 18 (4), 625658.

R. H. Hohle (1965). Inferred components of reaction-times as functions of foreperiod duration. Journal of Experimental Psychology, 69 (4), 382386. doi:10.1037/h0021740

J. D. Jackson , D. A. Balota , J. M. Duchek , & D. Head (2012). White matter integrity and reaction time intraindividual variability in healthy aging and early-stage Alzheimer disease. Neuropsychologia. 50, 357366. doi: 10.1016/j.neuropsychologia.2011.11.024.

L. L. Kapa , & J. Colombo (2013). Attentional control in early and later bilingual children. Cognitive Development, 28 (3), 233246. doi: 10.1016/j.cogdev.2013.01.011

J. F. Kroll , & E. Bialystok (2013). Understanding the consequences of bilingualism for language processing and cognition. Journal of Cognitive Psychology, 25 (5), 497514. doi: 10.1080/20445911.2013.799170

C. Leth-Steensen , Z. K. Elbaz , & V. I. Douglas (2000). Mean response times, variability, and skew in the responding of ADHD children: a response time distributional approach. Acta Psychologica, 104 (2), 167190. doi: 10.1016/s0001-6918(00)00019-6

G. Luk , J. A. E. Anderson , F. I. M. Craik , C. Grady , & E. Bialystok (2010). Distinct neural correlates for two types of inhibition in bilinguals: Response inhibition versus interference suppression. Brain and Cognition, 74 (3), 347357. doi: 10.1016/j.bandc.2010.09.004

M. M. Martin-Rhee , & E. Bialystok (2008). The development of two types of inhibitory control in monolingual and bilingual children. Bilingualism-Language and Cognition, 11 (1), 8193.

D. Matzke , & E. J. Wagenmakers (2009). Psychological interpretation of the ex-Gaussian and shifted Wald parameters: A diffusion model analysis. Psychonomic Bulletin & Review, 16 (5), 798817. doi: 10.3758/pbr.16.5.798

R. K. Mishra , M. D. Hilchey , N. Singh , & R. M. Klein (2012). On the time course of exogenous cueing effects in bilinguals: Higher proficiency in a second language is associated with more rapid endogenous disengagement. Quarterly Journal of Experimental Psychology, 65 (8), 15021510. doi: 10.1080/17470218.2012.657656

A. C. Nicolay , & M. Poncelet (2013). Cognitive advantage in children enrolled in a second-language immersion elementary school program for three years. Bilingualism-Language and Cognition, 16 (3), 597607. doi: 10.1017/s1366728912000375

K. R. Paap , & Z. I. Greenberg (2013). There is no coherent evidence for a bilingual advantage in executive processing. Cognitive Psychology, 66 (2), 232258. doi: 10.1016/j.cogpsych.2012.12.002

M. I. Posner , & S. E. Petersen (1990). The attention system of the human brain. Annu Rev Neurosci, 13, 2542. doi: 10.1146/

R. Ratcliff (1979). Group reaction time distributions and an analysis of distribution statistics. Psychological Bulletin, 86 (3), 446461. doi: 10.1037/0033-2909.86.3.446

F. Schmiedek , K. Oberauer , O. Wilhelm , H. M. Suss , & W. W. Wittmann (2007). Individual differences in components their relations to working of reaction time distributions and memory and intelligence. Journal of Experimental Psychology-General, 136 (3), 414429. doi: 10.1037/0096-3445.136.3.414

Z. S. Shao , A. Roelofs , & A. S. Meyer (2012). Sources of individual differences in the speed of naming objects and actions: The contribution of executive control. Quarterly Journal of Experimental Psychology, 65 (10), 19271944. doi: 10.1080/17470218.2012.670252

S. Silverberg , & A. G. Samuel (2004). The effect of age of second language acquisition on the representation and processing of second language words. Journal of Memory and Language, 51 (3), 381398.

J. R. Simon , & A. P. Rudell (1967). Auditory S-R Compatibility - Effect of An Irrelevant Cue on Information Processing. Journal of Applied Psychology, 51 (3), 300304.

D. H. Spieler , D. A. Balota , & M. E. Faust (2000). Levels of selective attention revealed through analyses of response time distributions. Journal of Experimental Psychology-Human Perception and Performance, 26 (2), 506526. doi: 10.1037//0096-1523.26.2.506

M. Steinhauser , & R. Hubner (2009). Distinguishing Response Conflict and Task Conflict in the Stroop Task: Evidence From Ex-Gaussian Distribution Analysis. Journal of Experimental Psychology-Human Perception and Performance, 35 (5), 13981412. doi: 10.1037/a0016467

L. Tao , A. Marzecova , M. Taft , D. Asanowicz , & Z. Wodniecka (2011). The efficiency of attentional networks in early and late bilinguals: the role of age of acquisition. Frontiers in Psychology, 2, 19. doi: 10.3389/fpsyg.2011.00123

C. S. Tse , & J. Altarriba (2012). The effects of first- and second-language proficiency on conflict resolution and goal maintenance in bilinguals: Evidence from reaction time distributional analyses in a Stroop task. Bilingualism-Language and Cognition, 15 (3), 663676. doi: 10.1017/s1366728912000077

C. S. Tse , D. A. Balota , M. J. Yap , J. M. Duchek , & D. P. McCabe (2010). Effects of Healthy Aging and Early Stage Dementia of the Alzheimer's Type on Components of Response Time Distributions in Three Attention Tasks. Neuropsychology, 24 (3), 300315. doi: 10.1037/a0018274

N. Unsworth , T. S. Redick , C. E. Lakey , & D. L. Young (2010). Lapses in sustained attention and their relation to executive control and fluid abilities: An individual differences investigation. Intelligence, 38 (1), 111122. doi: 10.1016/j.intell.2009.08.002

B. P. Vasquez , M. A. Binns , & N. D. Anderson (2016). Staying on Task: Age-Related Changes in the Relationship Between Executive Functioning and Response Time Consistency. The Journals of Gerontology. 71 (2), 189200. doi: 10.1093/geronb/gbu140.

P. Wuhr , & U. Ansorge (2005). Exploring trial-by-trial modulations of the Simon effect. Quarterly Journal of Experimental Psychology Section a-Human Experimental Psychology, 58 (4), 705731. doi: 10.1080/02724980443000269

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