Curiosity
Also known as: Information-gap theory
The drive to seek out novelty and knowledge, often sparked by an awareness of what we don't yet know.
What it means
Curiosity is the intrinsic motivation to seek out new information, experiences, and stimulation, and a major engine of exploration and learning. A leading account, Loewenstein's information-gap theory, recasts curiosity as a response to a perceived gap between what one knows and what one wants to know: becoming aware of the gap produces an aversive feeling of deprivation that motivates closing it, which is why a teaser or partial answer can be so compelling. Theorists distinguish interest-based curiosity, the pleasurable pull of exploration, from deprivation-based curiosity, the itch to resolve uncertainty, as well as perceptual from epistemic forms. The nuance is the inverted-U of novelty: stimuli that are too familiar bore and too unfamiliar overwhelm, so curiosity peaks at intermediate, surprising-but-comprehensible levels. It matters because curiosity drives intrinsic motivation, deep learning, and engagement, and can be deliberately aroused by opening information gaps.
The gap grows with knowledge
Loewenstein's most counterintuitive claim is that curiosity is not strongest when you know nothing; it is strongest when you know almost everything. The intensity of an information gap depends on how salient the missing piece is against what you already hold, so a small, well-defined blank in a rich body of knowledge galls more than a vast uncharted one. This is why experts are often the most curious people in their field, and why a crossword with one empty square is harder to abandon than a whole blank grid. It also sets a rule for teaching: giving learners just enough context to feel the shape of what they are missing arouses more curiosity than either withholding everything or handing over the finished answer.
The reward and memory circuit
Neuroimaging locates curiosity in the brain's valuation machinery. When people rate their curiosity about trivia questions, anticipating the answer activates striatal reward regions, the same circuitry engaged by food or money, and higher curiosity predicts better recall of that answer weeks later. A 2014 study went further: states of high curiosity engaged the midbrain and nucleus accumbens along the dopaminergic pathway and, strikingly, boosted memory not only for the sought-after fact but for unrelated material that happened to appear during the curious state. Curiosity, in other words, opens a window in which learning of all kinds is enhanced, rather than a spotlight narrowed to the question at hand. This gives the felt itch a concrete neural signature and a practical payoff for anyone designing when to teach.
Its own reward, even when it hurts
Because resolving uncertainty is rewarding in itself, curiosity can override judgment about whether the answer is worth having. In a range of experiments, people chose to expose themselves to unpleasant outcomes — mild electric shocks, unpleasant sounds — simply because the result was uncertain and they wanted to know. The drive to close a gap operated independently of any expected benefit, and often against it. This Pandora effect helps explain morbid curiosity, doom-scrolling, and the pull of a spoiler you know will ruin the film. For practitioners it is a caution: an information gap is a lever powerful enough to move people toward things that leave them worse off, which is one reason engineered gaps in feeds and headlines feel compulsive rather than enriching.
Arousing it without exhausting it
The reliable way to open a gap is to make someone commit before the reveal: ask for a guess, a prediction, or a bet, and the engaged-but-uncertain mind now has a stake in the answer. Prediction primes both curiosity and memory, which is why guess-first, explain-second outperforms leading with the explanation. But manufactured gaps carry a cost. A headline that pries open a gap it never satisfyingly closes trains people to distrust the source, and a gap held open too long curdles into frustration rather than delight. The craft is calibration: the gap must be real, the payoff proportional to the tease, and the resolution actually delivered. Curiosity behaves like a renewable resource only when the implied promise to close the loop is kept.
Examples
A documentary that poses a baffling mystery in its opening minutes makes viewers feel they must keep watching to close the nagging gap.
Headlines that withhold the last beat — 'the one habit that doubled her savings' — work by prying open an information gap that itches until you click and close it.
A teacher who makes the class guess an answer before explaining it holds far more attention than one who leads with the explanation, because the guess opens the gap first.
A puzzle game that reveals a locked treasure chest at the edge of each solved level keeps players tapping onward, because the sealed reward is a gap they feel compelled to close.
A job posting that names the unusual problem a team is stuck on draws stronger applicants than a generic duties list, because the concrete puzzle opens a gap a curious engineer wants to resolve.
First described in William James, Daniel Berlyne (1960); information-gap theory by George Loewenstein (1994).
Key references
- Hsee, C. K., & Ruan, B. (2016). The Pandora effect: The power and peril of curiosity. Psychological Science, 27(5), 659-666. doi.org/10.1177/0956797616631733
- Kidd, C., & Hayden, B. Y. (2015). The psychology and neuroscience of curiosity. Neuron, 88(3), 449-460. doi.org/10.1016/j.neuron.2015.09.010
- Gruber, M. J., Gelman, B. D., & Ranganath, C. (2014). States of curiosity modulate hippocampus-dependent learning via the dopaminergic circuit. Neuron, 84(2), 486-496. doi.org/10.1016/j.neuron.2014.08.060
- Kidd, C., Piantadosi, S. T., & Aslin, R. N. (2012). The Goldilocks effect: Human infants allocate attention to visual sequences that are neither too simple nor too complex. PLoS ONE, 7(5), e36399. doi.org/10.1371/journal.pone.0036399
- Kang, M. J., Hsu, M., Krajbich, I. M., Loewenstein, G., McClure, S. M., Wang, J. T., & Camerer, C. F. (2009). The wick in the candle of learning: Epistemic curiosity activates reward circuitry and enhances memory. Psychological Science, 20(8), 963-973. doi.org/10.1111/j.1467-9280.2009.02402.x
- Loewenstein, G. (1994). The psychology of curiosity: A review and reinterpretation. Psychological Bulletin, 116(1), 75-98. doi.org/10.1037/0033-2909.116.1.75