willslab - home
2018
[80]Edmunds, C.E.R., Milton, F., & Wills, A.J. (2018). Due process in dual process: Model-recovery simulations of decision-bound strategy analysis in category learning. Cognitive Science, accepted, . [pdf] [simulation code] [IR]
[79]Sambrook, T.D., Wills, A.J., Hardwick, B., & Goslin, J. (2018). Model-free and model-based reward prediction errors in EEG. NeuroImage, accepted, . [pdf] [model fits] [IR]
[78]Lea, S.E.G., Pothos, E.M., Wills, A.J., Leaver, L.A., Ryan, C.M.E., & Meier, C. (2018). Multiple Feature Use in Pigeons’ Category Discrimination: The Influence of Stimulus Set Structure and the Salience of Stimulus Differences. Journal of Experimental Psychology: Animal Learning and Cognition, 44, 114-127. [pdf] [IR]
[77]Edmunds, C.E.R., Wills, A.J., & Milton, F. (2018). Initial training with difficult items does not facilitate category learning. Quarterly Journal of Experimental Psychology, Published online, . [pdf] [exp. 1] [exp. 2] [exp. 3] [exp. 4] [IR]
[76]Longman, C.S., Milton, F., Wills, A.J., & Verbruggen, F. (2018). Transfer of learned category-response associations is modulated by instruction. Acta Psychologica, 184, 144-167. [pdf] [data, analysis] [IR]
2017
[75]Wills, A.J., O'Connell, G., Edmunds, C.E.R., & Inkster, A.B. (2017). Progress in modeling through distributed collaboration: Concepts, tools, and category-learning examples. Psychology of Learning and Motivation, 66, 79-115. [pdf] [latex] [IR] [get catlearn] [video: conference talk, EPS Jan 2017]
[74]Milton, F., Bealing, P., Carpenter, K.L., Bennattayallah, A., & Wills, A.J. (2017). The neural correlates of similarity- and rule-based generalization. Journal of Cognitive Neuroscience, 29, 150-166. [pdf] [data, analysis] [IR]
[73]Lawson, R., Chang, F., & Wills, A. J. (2017). Free classification of large sets of everday objects is more thematic than taxonomic. Acta Psychologica, 172, 26-40. [pdf] [data, analysis] [get freesortphi] [IR]
[72]Wills, A.J., & Hollins, T.J. (2017). In defence of effect-centric research. Journal of Applied Research in Memory and Cognition, 6, 43--46. [pdf] [IR]
[71]Roberts, H., Watkins, E., & Wills, A.J. (2017). Does rumination cause "inhibitory" deficits?. Psychopathology Review, 4, 341-376. [pdf] [IR]
[70]Edmunds, C.E.R., Milton, F., & Wills, A.J. (2017). Due process in dual process: A model-recovery analysis of Smith et al. (2014). In A. Gunzelmann, A. Howes, T. Tenbrink, & E.J. Davelaar (Eds.). Proceedings of the 39th Annual Conference of the Cognitive Science Society (pp. 1979-1984). Austin, TX: Cognitive Science Society. [pdf]
2016
[69]Le Pelley, M.E., Mitchell, C.J., Beesley, T., George, D.N., & Wills, A.J. (2016). Attention and associative learning in humans: An integrative review. Psychological Bulletin, 142, 1111-1140. [pdf] [IR]
[68]Carpenter, K., Wills, A.J., Bennattayallah, A., & Milton, F. (2016). A comparison of the neural correlates that underlie rule-based and information-integration category learning. Human Brain Mapping, 37, 3557–3574. [pdf] [IR]
[67]O'Connell, G., Myers, C.E., Hopkins, R.O., McLaren, R.P., Gluck, M.A., & Wills, A.J. (2016). Amnesic patients show superior generalization in category learning. Neuropsychology, 30, 915–919. [pdf] [simulation,data] [IR]
[66]Edmunds, C.E.R., Wills, A.J., & Milton, F.N. (2016). Memory for exemplars in category learning. In A. Papfragou, D. Grodner, D. Mirman, & J.C. Trueswell (Eds.). Proceedings of the 38th Annual Conference of the Cognitive Science Society (pp. 2243-2248). Austin, TX: Cognitive Science Society. [pdf]
[65]Edmunds, C.E.R., & Wills, A.J. (2016). Modeling category learning using a dual-system approach: A simulation of Shepard, Hovland and Jenkins (1961) by COVIS. In A. Papfragou, D. Grodner, D. Mirman, & J.C. Trueswell (Eds.). Proceedings of the 38th Annual Conference of the Cognitive Science Society (pp. 69-74). Austin, TX: Cognitive Science Society. [pdf]
2015
[64]Wills, A.J., Inkster, A.B., & Milton, F. (2015). Combination or Differentiation? Two theories of processing order in classification. Cognitive Psychology, 80, 1-33. [pdf] [suppl.] [exp. 1] [exp. 2] [exp. 3A] [exp. 3B] [impuls.] [exp. 4A] [exp. 4B] [exp. 5] [IR]
[63]Maes, E., De Filippo, G., Inkster, A., Lea, S.E.G., De Houwer, J., D'Hooge, R., Beckers, T., & Wills, A.J. (2015). Feature- versus rule-based generalization in rats, pigeons and humans. Animal Cognition, 18, 1267--1284. [pdf] [exp. 1A] [exp. 1B] [exp. 2A] [exp. 2B] [IR]
[62]Edmunds, C.E.R., Milton, F., & Wills, A.J. (2015). Feedback can be superior to observational training for both rule-based and information-integration category structures. Quarterly Journal of Experimental Psychology, 68, 1203-1222. [pdf] [exp. 1] [exp. 2] [IR]
[61]Yeates, F., Wills, A.J., Jones, F.W., & McLaren, I.P.L. (2015). State trace analysis: Dissociable processes in a connectionist network?. Cognitive Science, 39, 1047-1061. [pdf] [IR]
[60]Hogarth, L., Zhimin, H., Chase, H.W., Wills, A.J., Troisi II, J., Leventhal, M., Mathew, A.R., & Hitsman, B. (2015). Negative mood reverses devaluation of goal-directed drug-seeking favouring an incentive learning account of drug dependence. Psychopharmacology, 232, 3235-3247. [pdf] [IR]
2014
[59]Wills, A.J., Lavric, A., Hemmings, Y., & Surrey, E. (2014). Attention, predictive learning, and the inverse base-rate effect: Evidence from event-related potentials. NeuroImage, 87, 61-71. [pdf] [IR]
[58]Inkster, A. B., Milton, F. N., & Wills, A. J. (2014). Does incidental training increase the prevalence of overall similarity classification ? A re-examination of Kemler Nelson (1984). In P. Bello, M. Guarini, M. McShane, & B. Scassellati (Eds.). Proceedings of the 36th Annual Conference of the Cognitive Science Society (pp. 649-653). Austin, TX: Cognitive Science Society. [pdf]
[57]Milton, F., Copestake, E., Satherley, D., Stevens, T., & Wills, A. J. (2014). The effect of pre-exposure on family resemblance categorization for stimuli of varying levels of perceptual difficulty. In P. Bello, M. Guarini, M. McShane, & B. Scassellati (Eds.). Proceedings of the 36th Annual Conference of the Cognitive Science Society (pp. 1018-1023). Austin, TX: Cognitive Science Society. [pdf]
[56]Carmantini, G. S., Cangelosi, A., & Wills, A. (2014). Machine learning of visual object categorization: An application of the SUSTAIN model. In P Bello, M Guarini, M McShane, & B Scassellati (Eds.). Proceedings of the 36th Annual Conference of the Cognitive Science Society (pp. 290-295). Austin, TX: Cognitive Science Society. [pdf]
2013
[55]Wills, A.J., Milton, F., Longmore, C.A., Hester, S., & Robinson, J. (2013). Is overall similarity classification less effortful than single-dimension classification?. Quarterly Journal of Experimental Psychology, 66, 299-318. [pdf] [exp. 1A] [exp. 1B] [exp. 2] [exp. 3] [exp. 4]
[54]Newell, B.R., Moore, C.P., Wills, A.J., & Milton, F. (2013). Reinstating the frontal lobes? Having more time to think improves 'implicit' perceptual categorization. A comment on Filoteo, Lauritzen and Maddox (2010). Psychological Science, 24, 386-389. [pdf]
[53]Yeates, F., Wills, A.J., McLaren, R.P., & McLaren, I.P.L. (2013). Modeling human sequence learning under incidental conditions. Journal of Experimental Psychology: Animal Behavior Processes, 39, 166-173. [pdf]
[52]Wills, A.J. (2013). Models of categorization. In D. Reisberg (Ed.). Oxford Handbook of Cognitive Psychology (pp. 346-357). Oxford: Oxford University Press. [pdf]
[51]Wills, A.J., Longmore, C.A., & Milton, F. (2013). Impulsivity and overall similarity classification. In M. Knauff, M. Pauen, N. Sebanz, & I. Wachsmuth (Eds.). Proceedings of the 35th Annual Conference of the Cognitive Science Society (pp. 3783-3788). Austin, TX: Cognitive Science Society. [pdf]
[50]Yeates, F., Jones, F.W., Wills, A.J., Aitken, M.R.F., & McLaren, I.P.L. (2013). Implicit learning: A demonstration and a revision to a novel SRT paradigm. In M. Knauff, M. Pauen, N. Sebanz, & I. Wachsmuth (Eds.). Proceedings of the 35th Annual Conference of the Cognitive Science Society (pp. 3829-3834). Austin, TX: Cognitive Science Society. [pdf]
[49]Roberts, H., Watkins, E.R., & Wills, A.J. (2013). Cueing an unresolved personal goal causes persistent ruminative self-focus: an experimental evaluation of control theories of rumination. Journal of Behavior Therapy and Experimental Psychiatry, 44, 449-455. [pdf]
2012
[48]Wills, A.J., & Pothos, E.M. (2012). On the adequacy of current empirical evaluations of formal models of categorization. Psychological Bulletin, 138, 102-125. [pdf]
[47]Wills, A.J., & Pothos, E.M. (2012). On the adequacy of Bayesian evaluations of categorization models: Reply to Vanpaemel & Lee (2012). Psychological Bulletin, 138, 1253-1258. [pdf]
[46]Yeates, F., Jones, F.W., Wills, A.J., Aitken, M.R.F., & McLaren, I.P.L. (2012). Implicit Learning: A Demonstration and a Novel SRT Paradigm. In N Miyake, D Peebles, & RP Cooper (Eds.). Proceedings of the 34th Annual Conference of the Cognitive Science Society (pp. 1185-1190). Austin, TX: Cognitive Science Society. [pdf]
[45]Yeates, F., Wills, A.J., Jones, F.W., & McLaren, I.P.L. (2012). State-trace analysis of sequence learning by recurrent networks. In N Miyake, D Peebles, & RP Cooper (Eds.). Proceedings of the 34th Annual Conference of the Cognitive Science Society (pp. 2581-2586). Austin, TX: Cognitive Science Society. [pdf]
[44]Kovacs, T., & Wills, A.J. (2012). Generalization versus discrimination in learning. In N.M. Seele (Ed.). Encyclopedia of the Sciences of Learning (pp. ). Springer.
2011
[43]Wills, A.J., Graham, S., Koh, Z., McLaren, I.P.L., & Rolland, M.D. (2011). Effects of concurrent load on feature- and rule-based generalization in human contingency learning. Journal of Experimental Psychology: Animal Behavior Processes, 37, 308-316. [pdf] [exp. 1] [exp. 2]
[42]Welham, A.K., & Wills, A.J. (2011). Unitization, similarity and overt attention in categorization and exposure. Memory and Cognition, 39, 1518-1533. [pdf]
[41]Graham, S., Jie, H.L., Minn, C.H., McLaren, I.P.L., & Wills, A.J. (2011). Simultaneous backward conditioned inhibition and mediated conditioning. Journal of Experimental Psychology: Animal Behavior Processes, 31, 241-245. [pdf]
[40]Goto, K., Lea, S.E.G., Wills, A.J., & Milton, F. (2011). Interpreting the effects of image manipulation on picture perception in pigeons (Columba livia) and humans (Homo sapiens). Journal of Comparative Psychology, 125, 48-60. [pdf]
[39]Pothos, E.M., & Wills, A.J. (2011). Formal approaches in categroization. Cambridge University Press. [pdf]
[38]Wills, A.J., Barrasin, T.J., & McLaren, I.P.L. (2011). Working memory capacity and generalization in predictive learning. In L. Carlson, C. Holscher, & T. Shipley (Eds.). Proceedings of the 33rd Annual Conference of the Cognitive Science Society (pp. 3205-3210). Austin, TX: Cognitive Science Society. [pdf]
[37]Milton, F., Viika, L., Henderson, H., & Wills, A.J. (2011). The effect of time pressure and the spatial integration of the stimulus dimensions on overall similarity categorization. In L. Carlson, C. Holscher, & T. Shipley (Eds.). Proceedings of the 33rd Annual Conference of the Cognitive Science Society (pp. 795-800). Austin, TX: Cognitive Science Society. [pdf]
[36]McLaren, I.P.L., Wills, A.J., & Graham, S. (2011). Representation development, perceptual learning and concept formation. Behavioral and Brain Sciences, 34, 141-142. [pdf]
[35]Wills, A.J. (2011). Learning from errors: Perspectives from basic research. In E. Wuttke, & J. Seifried (Eds.). Learning from Errors at School and at Work (pp. 143-153). Verlag Barbara Budrich.
2010
[34]Beesley, T., Wills, A.J., & Le Pelley, M.E. (2010). Syntactic transfer in artificial grammar learning. Psychonomic Bulletin and Review, 17, 122-128. [pdf]
[33]Hopewell, L., Leaver, L.A., Lea, S.E.G., & Wills, A.J. (2010). Grey squirrels (Sciurus carolinensis) show a feature-negative effect specific to social learning. Animal Cognition, 13, 219-227. [pdf]
[32]McLaren, I.P.L., Wills, A.J., & Graham, S. (2010). Attention and Perceptual Learning. In C. Mitchell, & M. Le Pelley (Eds.). Attention and associative learning: From brain to behaviour (pp. ). Oxford: Oxford University Press. [pdf]
2009
[31]Wills, A.J. (2009). Prediction errors and attention in the presence and absence of feedback. Current Directions in Psychological Science, 18, 95-100. [pdf]
[30]Wills, A.J., Lea, S.E.G., Leaver, L.A., Osthaus, B., Ryan, C.M.E., Suret, M.B., Bryant, C.M.L., Chapman, S.J., & Millar, L. (2009). A comparative analysis of the categorization of multidimensional stimuli: I. Unidimensional classification does not necessarily imply analytic processing; evidence from pigeons (Columba livia), squirrels (Sciurus carolinensis), and humans (Homo sapiens). Journal of Comparative Psychology, 123, 391-405. [pdf] [exp1a] [exp1b] [exp2] [squirrel video]
[29]Milton, F., Wills, A.J., & Hodgson, T.L. (2009). The neural basis of overall similarity and single-dimension sorting. NeuroImage, 46, 319-326. [pdf]
[28]Milton, F., & Wills, A.J. (2009). Long-term persistence of sort strategy in free classification. Acta Psychologica, 130, 161-167. [pdf]
[27]Lea, S.E.G., Wills, A.J., Leaver, L.A., and Ryan, C.M.E., Bryant, C.M.L., & Millar, L. (2009). A comparative analysis of the categorization of multidimensional stimuli: II. Strategic information search in humans (Homo sapiens) but not in pigeons (Columba livia). Journal of Comparative Psychology, 123, 406-420. [pdf]
[26]Milton, F., & Wills, A.J. (2009). Eye movements in overall similarity and single-dimension sorting. In N.A. Tattgen, & H. van Rijn (Eds.). Proceedings of the 31st Annual Conference of the Cognitive Science Society (pp. 1512-1517). Austin, TX: Cognitive Science Society. [pdf]
2008
[25]Milton, F., Longmore, C.A., & Wills, A.J. (2008). Processes of overall similarity sorting in free classification. Journal of Expeirmental Psychology: Human Perception and Performance, 30, 407-415. [pdf]
[24]Lea, S.E.G., & Wills, A.J. (2008). Use of multiple dimensions in learned discriminations. Comparative Cognition and Behavior Reviews, 3, 115-133. [pdf]
[23]Milton, F., & Wills, A.J. (2008). The influence of perceptual difficulty on family resemblance sorting. In B.C. Love, K. McRae, & M. Sloutsky (Eds.). Proceedings of the 30th Annual Conference of the Cognitive Science Society (pp. 2273-2278). Austin, TX: Cognitive Science Society. [pdf]
2007
[22]Wills, A.J., Lavric, A., Croft, G., & Hodgson, T.L. (2007). Predictive learning, prediction errors and attention: Evidence from event-related potentials and eye tracking. Journal of Cognitive Neuroscience, 19, 843-854. [pdf] [publicity]
[21]Haslam, C., Wills, A.J., Haslam, S.A., Kay, J., Baron, R., & McNab, F. (2007). Does maintenance of colour categories rely on language? Evidence to the contrary from a case of semantic dementia. Brain and Language, 103, 251-263. [pdf]
2006
[20]Wills, A.J., Noury, M., Moberly, M.J., & Newport, M. (2006). Formation of category representations. Memory and Cognition, 34, 17-27. [pdf]
[19]Lea, S.E.G., Wills, A.J., & Ryan, C.M.E. (2006). Why are artificial polymorphous concepts so hard for birds to learn?. Quarterly Journal of Experimental Psychology, 59, 251-267. [pdf]
2005
[18]Le Pelley, M.E., Oakeshott, S.M., Wills, A.J., & McLaren, I.P.L. (2005). The outcome-specificity of learned predictiveness effects: Parallels between human causal learning and animal conditioning. Journal of Experimental Psychology: Animal Behavior Processes, 31, 2226-236. [pdf]
[17]Wills, A.J. (2005). New Directions in Human Associative Learning. Hove: Lawrence Erlbaum Associates.
[16]Zwickel, J., & Wills, A.J. (2005). Integrating associative models of supervised and unsupervised categorization. In A.J. Wills (Ed.). New Directions in Human Associatve Learning (pp. 101-123). Lawrence Erlbaum Associates. [pdf]
[15]Wills, A.J. (2005). Applications and extensions. In A.J. Wills (Ed.). New Directions in Human Associatve Learning (pp. 189-191). Lawrence Erlbaum Associates. [pdf]
[14]Wills, A.J. (2005). Connectionist models of human associative learning. In A.J. Wills (Ed.). New Directions in Human Associatve Learning (pp. 95-99). Lawrence Erlbaum Associates. [pdf]
[13]Wills, A.J. (2005). Association and cognition. In A.J. Wills (Ed.). New Directions in Human Associatve Learning (pp. 1-9). Lawrence Erlbaum Associates. [pdf]
2004
[12]Milton, F., & Wills, A.J. (2004). The influence of stimulus properties on category construction. Journal of Experimental Psychology: Learning, Memory and Cognition, 30, 407-415. [pdf]
[11]Wills, A.J., Suret, M.B., & McLaren, I.P.L. (2004). The role of category structure in determining the effects of stimulus preexposure on categorization accuracy. Quarterly Journal of Experimental Psychology, 57B, 79-88. [pdf] [fig1svg] [fig1pdf]
[10]Goto, K., Wills, A.J., & Lea, S.E.G. (2004). Global-feature classification can be acquired more rapidly than local-feature classification in both humans and pigeons. Animal Cognition, 7, 109-113. [pdf]
[9]Bryant, C.M., Jones, G.J.F., & Wills, A.J. (2004). Integration of psychological models in the design of artificial creatures. Proceedings of the AISB 2004 symposium on Emotion, Cognition and Affective Computing (pp. 9-20). . [pdf]
2003
[8]Welham, A.K., Schnadt, M.J., & Wills, A.J. (2003). Speeded categorization: the effects of perceptual processing and decision-making time. In R. Alterman, & D. Kirsh (Eds.). Proceedings of the 25th Annual Conference of the Cognitive Science Society (pp. 1218-1223). Mahwah, NJ: Lawrence Erlbaum Associates. [pdf]
[7]Lochmann, T., & Wills, A.J. (2003). Predictive history in an allergy prediction task. In F. Schmalhofer, R.M. Young, & G. Katz (Eds.). Proceedings of EuroCogSci 03: The European Cognitive Science Conference (pp. 217-222). Mahwah, NJ: Lawrence Erlbaum Associates. [pdf]
2002
[6]Zwickel, J., & Wills, A.J. (2002). Is competitive learning an adequate account of free classification?. In W.D. Gray, & C.D. Schunn (Eds.). Proceedings of the 24th Annual Conference of the Cognitive Science Society (pp. 982-987). Mahwah, NJ: Lawrence Erlbaum Associates. [pdf]
[5]Wills, A.J. (2002). Adapting to a response deadline in categorization. In W.D. Gray, & C.D. Schunn (Eds.). Proceedings of the 24th Annual Conference of the Cognitive Science Society (pp. 938-943). Mahwah, NJ: Lawrence Erlbaum Associates. [pdf] [exp. 1]
2000
[4]Wills, A.J., Reimers, S., Stewart, N., & McLaren, I.P.L. (2000). Tests of the ratio rule in categorization. Quarterly Journal of Experimental Psychology, 53A, 983-1011. [pdf] [exp. 2]
1998
[3]Wills, A.J., & McLaren, I.P.L. (1998). Perceptual learning and free classification. Quarterly Journal of Experimental Psychology, 51B, 235-270. [pdf] [fig1png]
[2]Jones, F.W., Wills, A.J., & McLaren, I.P.L. (1998). Perceptual categorization: connectionist modelling and decision rules. Quarterly Journal of Experimental Psychology, 51B, 33-58. [pdf]
1997
[1]Wills, A.J., & McLaren, I.P.L. (1997). Generalization in human category learning: A connectionist explanation of differences in gradient after discriminative and non-discriminative training. Quarterly Journal of Experimental Psychology, 50A, 607-630. [pdf]
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