Current Projects

Click on my research interests to see the current projects my lab is working on

Cognitive Control Processes

How do we control out attention to external stimuli and internal goals?

Computational Cognitive Models

Applying theoretical models to understand cognition in basic & applied settings

Cognition in Clinical & Ageing Populations

Using our understanding of healthy cognition to probe cognition in clinical & ageing populations

Scientific Reproducibility & Replication

How reproducible are scientific findings? How can we improve reproducibility?

Publications

(2020). mixtur: An R package for designing, analysisng, and modelling continuous report visual short-term memory studies. under review.

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(2020). Computational modelling of attentional selectivity in depression reveals perceptual deficits. Psychological Medicine, in press.

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(2020). Exploring the impact of mindfulness on false-memory susceptibility. Psychological Science, 31, 968–977.

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(2020). The effect of episodic retrieval on inhibition in task switching: A diffusion model analysis. Psychological Research, 84, 1965–1999.

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(2020). Beliefs about voices in voice-hearers: The role of schema functioning. Behavioural and Cognitive Psychotherapy, 48, 584–597.

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(2019). Cognitive function, self-awareness, and neuroimaging findings in OCD-type presentations after Traumatic Brain Injury. Panamerican Journal of Neuropsychology, 13, 15–28.

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(2019). Increased cognitive control after task conflict? Investigating the n–3 effect in task switching. Psychological Research, 83, 1703–1721.

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(2019). The effect of aging on response congruency in task switching: A meta-analysis. Journals of Gerentology Series B: Psychological Sciences & Social Sciences, 74, 389-396.

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(2019). The effect of practice on inhibition in task switching: Controlling for episodic retrieval. Acta Psychologica, 192, 59–72.

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(2018). Does task activation in task switching influence inhibition or episodic interference?. Experimental Psychology, 65, 393–404.

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(2018). Impulse control disorder in Parkinson’s disease: A meta-analysis of cognitive, affective, and motivational correlates. Frontiers in Neurology, 9: 654.

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(2018). Justify your alpha. Nature Human Behavior, 2, 168–171.

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(2018). Risky decision-making and affective features of impulse control disorder in Parkinson’s disease. Journal of Neural Transmission, 125, 131–143.

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(2017). The effect of episodic retrieval on inhibition in task switching. Journal of Experimental Psychology: Human Perception & Performance, 43, 1568–1583.

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(2017). Inhibition in task switching: The reliability of the n−2 repetition cost. Quarterly Journal of Experimental Psychology, 70, 2419–2433.

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(2017). Does familial risk for alcohol use disorder predict alcohol hangover?. Psychopharmacology, 234, 1795–1802.

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(2016). A deficit in familiarity-driven recognition in a right-sided mediodorsal thalamic lesion patient. Neuropsychology, 30, 213–224.

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(2016). Temporal distinctiveness in task switching: Assessing the mixture-distribution assumption.. Frontiers in Cognition, 7, 251.

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(2016). flankr: An R package implementing computational models of attentional selectivity. Behavior Research Methods, 48, 528–541.

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(2016). Response to a comment on 'Estimating the reproducibility of psychological science'. Science, 351, 1037.

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(2016). The effect of alcohol hangover on choice response time. Journal of Psychopharmacology, 30, 654–661.

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(2016). Time for insulting reviews to stop. The Psychologist, 29, 158.

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(2015). Estimating the reproducibility of psychological science. Science, 349, 943.

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(2015). The effect of n–3 on n–2 repetition costs in task switching. Journal of Experimental Psychology: Learning, Memory, & Cognition, 41, 760–767..

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(2015). The effect of practice on n–2 repetition costs in set switching. Acta Psychologica, 154, 14–25..

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(2015). Can time-based decay explain temporal distinctiveness effects in task switching?. Quarterly Journal of Experimental Psychology, 68, 19–45..

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(2014). Task switching and cognitive control. New York, NY: Oxford University Press.

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(2014). Task switching and cognitive control: An introduction. In J.A. Grange & G. Houghton (Eds.), Task switching and cognitive control, New York, NY: Oxford University Press.

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(2014). Models of cognitive control in task switching. In J.A. Grange & G. Houghton (Eds.), Task switching and cognitive control, New York, NY: Oxford University Press.

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(2014). A critical analysis of alcohol hangover research methodology for surveys or studies of effects on cognition.. Psychopharmacology, 231, 2223–2236.

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(2014). The replication recipe: What makes for a convincing replication?. Journal of Experimental Social Psychology, 50, 217–224..

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(2013). What's all this business about Bayes?. PsyPAG Quarterly, 89, 12–13.

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(2013). The Reproducibility Project: A model of large-scale collaboration for empirical research on reproducibility. In V. Stodden, F. Leisch, & R. Peng (Eds.), Implementing Reproducible Computational Research (A Volume in the R Series), New York, NY: Taylor & Francis..

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(2013). On costs and benefits of n–2 repetitions in task switching: Towards a behavioural marker of cognitive inhibition.. Psychological Research, 77, 211–222.

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(2012). An open, large-scale, collaborative effort to estimate the reproducibility of psychological science. Perspectives on Psychological Science, 7, 657–670.

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(2012). Cost–benefit and distributional analyses of accessory stimuli. Psychological Research, 76, 626–633.

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(2011). CDF-XL: Computing cumulative distribution frequencies of reaction time data in Excel. Behavior Research Methods, 43, 1023–1032.

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(2011). Task preparation and task inhibition: A comment on Koch, Gade, Schuch, & Philip (2010). Psychonomic Bulletin & Review, 18, 211–216.

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(2011). Control of working memory contents during task switching. In E.S.Levin (Ed.), Working Memory: Capacity, Development, & Improvement Techniques. New York, NY: Nova Science Publishers..

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(2010). Heightened conflict in cue–target translation increases backward inhibition in set switching. Journal of Experimental Psychology: Learning, Memory, & Cognition, 36, 1003–1009.

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(2010). Cue-switch costs in task-switching: Cue priming or control processes?. Psychological Research, 74, 481–490.

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(2009). Temporal cue–target overlap is not essential for backward inhibition in task switching. Quarterly Journal of Experimental Psychology, 62, 2069–2080.

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(2009). The role of cue–target translation in backward inhibition of attentional set. Journal of Experimental Psychology: Learning, Memory, & Cognition, 35, 466–476.

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CV

Click here for a copy of my CV.

Blog Posts

4 min read R, Statistics

Final Year Psychology students across the UK are busy preparing their experimental work. Many students will be conducting correlation studies. Several of my own students are using correlation methods to explore the relationship between aspects of cognition and severity of certain clinical disorders (for example depression). A typical question I receive from students is “How many participants do I need for my study?” For my students I have developed a “Power Table for Correlations” to help them answer this question.

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4 min read General

Today marks my 10 year anniversary of working at Keele University. On the one hand it feels like a blink of an eye, and yet on the other a lifetime. (Well, as I am 38 years old, a quarter of a lifetime.) I started my lectureship in Psychology at Keele on the 1st July 2010, 3 weeks before I obtained my PhD. Imposter syndrome was—and still is—alive and well.

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19 min read R, response times

In 2015, I published my first ever R package: “trimr: An implementation of common response time trimming methods”. To date, this package has had over 5,600 downloads from CRAN, which is unbelievable! 3 years is a long time for a package, so I thought it was time to update the package, fix some bugs, and implement some additional functionality. To this end, I have spent some time over the past few days working on a new release.

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1 min read General

I have spent the past day or so transporting my acedemic website from Wordpress to the current website, which is written using the (superb!) R package ‘blogdown’. I made the change for a variety of reasons: I am now able to use R for most things—analysis, simulations, writing papers using papaja and now my website—making my workflow more efficient (and high on the nerd-scale). I could never really get my wordpress site to look sleek and professional.

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