Modeling experimentally induced strategy shifts: Research report

Scott Brown, Mark Steyvers, Pernille Hemmer

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


In dynamic decision-making environments, observers must continuously adjust their decision-making strategies. Previous research has focused on internal fluctuations in decision mechanisms, without regard to how these changes are induced by environmental changes. We developed a simple paradigm in which we manipulated task difficulty, thereby inducing changes in decision processes. We applied this paradigm to recognition memory, manipulating task difficulty by changing the similarity of lures to targets. More difficult decision environments caused participants to make more careful decisions, but these changes did not appear immediately. We propose a simple theoretical account for these data, using a dynamic version of signal detection theory fitted to individual subjects. Our model represents a significant departure from existing models because it incorporates subject-controlled parameters that may adjust over time in response to environmental changes.

Original languageEnglish (US)
Pages (from-to)40-45
Number of pages6
JournalPsychological Science
Issue number1
StatePublished - Jan 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Psychology(all)


Dive into the research topics of 'Modeling experimentally induced strategy shifts: Research report'. Together they form a unique fingerprint.

Cite this