Studies (page 13)

Lally and colleagues ran the study that produced the number everyone misquotes. Ninety-six volunteers each chose one eating, drinking or activity behaviour to perform daily in the same context, such…

96 volunteers, one eating, drinking or activity behaviour daily in the same context for 12 weeks; 82 gave sufficient data; model fitted for 62, good fit for 39; time to 95 per cent of asymptote 18…

Lange and Eggert tested the glucose explanation of willpower, which held that self-control consumes blood sugar and that a sugary drink restores it, a claim that had reached the point where merely…

Larrick, Morgan and Nisbett tested whether the cost-benefit rules of economics transfer to ordinary life, and whether they can be taught. Two groups were examined: people with extensive formal…

Shu Law and Kathryn Braun studied product placements in television programmes. In the abstract's words, the results showed an overall enhancement in product recall, recognition and choice due to…

Leary and colleagues ran five studies on how self-compassionate people handle unpleasant events, using different methods each time: daily reports of real events, imagined scenarios, reactions to…

Randomised field experiment on a major North American retailer's website, 82,290 products and 1,138,238 users; collaborative filtering associated with lower aggregate sales diversity than no…

Lehmann and Calin-Jageman ran the replication that is hardest to argue with. Red had been reported to enhance attraction for women rating men and for men rating women. To ensure rigour, the authors…

Leunissen and colleagues combined the affect measures from forty-one experiments that induced nostalgia, covering more than four and a half thousand participants, to settle what kind of feeling it…

Levy-Gigi and Shamay-Tsoory tested two conditions that ought to matter for naming feelings: when you do it, and how strong the feeling is. In the first experiment, participants labelled their…

Lieberman and colleagues used brain imaging to ask why putting feelings into words helps. Participants viewed distressing images while either labelling the emotion the image produced or encoding it…

Lieberman and colleagues moved affect labelling out of the scanner and asked whether it changes what people report feeling. Across four studies, naming the emotion produced by a distressing image…

Lin, Zheng and Wang meta-analysed the research on Solomon's paradox, combining six studies and twenty effect sizes to ask whether the pattern holds and how large it is. It does hold for…

Lindenfors, Wartel and Lind test whether there is statistical support for the widespread belief that humans can maintain stable relationships with approximately 150 people, a figure originating in…

Sportscard show, 148 subjects (74 dealers, 74 non-dealers), two memorabilia items of similar value; dealers traded at 43.6 and 45.7 per cent; inexperienced non-dealers (fewer than 6 trades a month)…

Four studies (three online, one lab), total n = 692; no replication of the credit card effect on WTP or basket value; their meta-analysis found the effect but weaker through the years and contingent…

This is a company's own financial disclosure, cited as industry data rather than as independent evidence. Live Nation Entertainment reported record total revenue for 2025, with the concerts division…

This entry covers the body of work on reconstructive memory and the misinformation effect: the finding that memory is not a recording that can be played back, but an account rebuilt each time it is…

Six experiments; lay people adhered more to advice labelled as algorithmic; effect waned when choosing between an algorithm and their own estimate and among experienced forecasters.

Nine studies; uniqueness neglect; stronger for people who see themselves as more unique; curbed when care is personalised or AI only supports a human provider.