Mark Haselgrove

Mark Haselgrove

@markhaselgrove.bsky.social

Professor of Experimental Psychology at the University of Nottingham. Interested in associative learning, and its application to all manner of stuff. Not really interested in brains. He/him. https://scholar.google.co.uk/citations?user=fObPQPsAAAAJ&hl=en

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Looking forward to a couple of days away in Coniston later this week. It never ceases to amaze me, however, just how massively different the weather forecasts are. Met office for Friday... Suny intervals and a 20% chance of rain.

Finished the "gently balance the herbs, shallots and wine" stage of the risotto. Now onto the "slowly and carefully add the stock" stage. Looking forward to the "The rest of the bottle of wine has been finished over the past 40 min so now cavalierly chuck in a whole cow's worth of cheese" stage

Always exciting to start writing up a new paper. These are quite old data now, but quite cool none-the-less. The bias that is acquired towards looking at predictive vs irrelevant cues during learned predictiveness increases in children between the ages of 5 to 12

Not all that surprising at first blush, as children's ability to learn the task also increases with age, but when this is controlled as a co-variate, we still see a significant relationship between age and learned attentional bias.

Today we were informed that a, rather derided, company that was subcontracted to provide mental-health services to staff at our university has ceased trading and will no longer be available to us. Ironically this has created great joy in some colleagues.

Apparently, paying a company a huge amount of money to get employees to fill-in mood colour-wheels and identify which sad face in a tree they most align with is not well received when 2700 staff have been put at risk of redundancy.

Mark Haselgrove reposted

Sunday morning Ethel bagging in the Peak District. Lots of geological sights, a good trig point, and then a pint and a packet. Wardlow Hay Cop, high above Cressbrook Dale. Ethel number 37/95.

Mark Haselgrove reposted

Check out our W-ACE model: how we use Rescorla-Wagner to explain standard/reverse latent inhibition!!

Mark Haselgrove@markhaselgrove.bsky.social

New Preprint! "Facilitation and Attenuation of Learning to Novel and Familiar Stimuli Through Contextual Mismatch: Experimental Evidence and a Computational Model" By @jialinshi.bsky.social and me. osf.io/preprints/ps...

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Using a simple delta rule (Rescorla-Wagner) tweaked so that the associative strength of the common elements is weighted by its exposure-dependent activation we can simulate our results, showing latent inhibition, and its reversal:

We regard this as a "proof of concept". The goal is to show that the effect of familiarisation doesn't have to be the loss of salience (e.g Pearce & Hall, 1980 etc) but instead the replacement of one feature with another. With this, a simple delta-rule based model of learning may have some merit.

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When the context (operationalsed as distractors) sustains familiarity, then learning is more successful to a novel than a familiar cue - latent inhibition But the opposite is observed when the context sustains novelty, ever changing - reversed latent inhibition (see also: Haselgrove et al., 2025)

To explain this, we propose that novelty and familiarity are common elements, permitting generalization between context and cues. As stimuli are exposed, rather than become less salient overall, activity in one element is replaced with another:

Here we report three experiments using real and artificial images which show that the success of learning about familiar and novel stimuli depends on novelty mismatch with the context.

And me 😀

David Webb@allaboutpsychology.bsky.social

On this day in psychology, 26 September 1849, Ivan Pavlov was born. His pioneering research on conditioned reflexes profoundly influenced behavioral psychology and figures including Watson and Skinner. www.all-about-psychology.com/the-reply-of... #psychology #IvanPavlov

One thing that I am becoming more attuned to while walking, especially out in the wilder parts, is how much switching there is between proximal, short-term processing and more distal longer-term planning.

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I've noticed I'm enjoying, more and more, the switching between these perspectives. I have no idea if it has any kind of specific cognitive benefit, beyond the mental health improvements known about from getting out and doing exercise, but I'm sure it can't hurt.

One thing that I am becoming more attuned to while walking, especially out in the wilder parts, is how much switching there is between proximal, short-term processing and more distal longer-term planning.

In a sufficiently large academic institution, there will be enough people who are dicks in slightly different ways, so that ultimately everyone else does nothing else with their time except attend training courses.

"Dynamic salience as a basis for behavioural meta-malleability" by Sosa & Trevino. A synthesis of behavioural, computational and neural work on acquired salience. Particularly like their treatment of the Esber-Haselgrove theory of learning & attention. royalsocietypublishing.org/rsos/article...

royalsocietypublishing.orgDynamic salience as a basis for behavioural meta-malleabilityAbstract. Salience, the degree to which cues capture attention, is not fixed but updated through experience. Learning which cues anticipate meaningful outc