Concepts (page 14)
- General Intelligence (g)
General intelligence, or g, is Charles Spearman's 1904 proposal that performance on any cognitive task reflects a general ability common to all such tasks plus a specific ability peculiar to that…
- Generational Differences
Generational differences are the claim that people born in a given span of years share attitudes, values and work motivations that mark them off from the cohorts either side of them. It is the most…
- Geodemographic Clustering
Geodemographic clustering is sorting an entire population into lifestyle types using census and postcode data instead of treating consumers as one undifferentiated mass. Jonathan Robbin built the…
- Ghrelin
Ghrelin is the hormone popular writing calls the hunger hormone. In humans it rises sharply just before the times a person habitually eats, and falls within about an hour of eating. It is real, and…
- Glycaemic Dip
A glycaemic dip is a fall in blood sugar below where it started, typically two to three hours after a meal. It is not the spike the popular story blames, and it is not the clinical condition…
- Graphic Health Warnings
Graphic health warnings are pictures of the harms of smoking printed on cigarette packs. Across experimental studies they outperform text-only warnings on most measures, and in a randomised trial…
- Grit
Grit, as Angela Duckworth defines it, is passion and perseverance for long-term goals. The claim that made it famous was never that gritty people succeed, which is close to a tautology, but that…
- Group Identification
Group identification is the extent to which a person takes one specific group to be part of who they are, rather than a set of people they happen to be near. It is the narrow construct inside social…
- Groupthink
Groupthink is Irving Janis's term for a mode of group decision-making in which the drive for unanimity overrides realistic appraisal of alternatives. He set it out in Victims of Groupthink in 1972…
- Habit Formation
Habit formation is the process by which repeating a behaviour in a stable context makes it automatic, so that the cue rather than a decision starts the action. The field's one real-world dataset is…
- Habit Stacking
Habit stacking is attaching a new habit to a behaviour you already perform every day, so that the established routine supplies the cue and you never have to remember to start. Boil the kettle, then…
- Habit Testing
Habit testing is Nir Eyal's three-step operational method for finding habit-forming product-market fit, modelled on the build-measure-learn loop: identify who your habitual users are and how many…