Cognitive reflection test

The cognitive reflection test (CRT) is a task designed to measure a person's tendency to override an incorrect "gut" response and engage in further reflection to find a correct answer. It was first described in 2005 by psychologist Shane Frederick. The CRT has a moderate positive correlation with measures of intelligence, such as the Intelligence Quotient test, and it correlates highly with various measures of mental heuristics.[1][2][3][4]

Later research showed that the CRT is a multifaceted construct: many start their response with the correct answer, while others fail to solve the test even if they reflect on their intuitive first answer. It has also been argued that suppression of the first answer is not the only factor behind the successful performance on the CRT: numeracy and reflectivity both account for performance.[5]

Basis of test

According to Frederick, there are two general types of cognitive activity called "system 1" and "system 2" (these terms have been first used by Daniel Kahneman). System 1 is executed quickly without reflection, while system 2 requires conscious thought and effort. The cognitive reflection test has three questions that each have an obvious but incorrect response given by system 1. The correct response requires the activation of system 2. For system 2 to be activated, a person must note that their first answer is incorrect, which requires reflection on their own cognition.[1]

Correlating measures

The test has been found to correlate with many measures of economic thinking, such as numeracy,[5] temporal discounting, risk preference, and gambling preference.[1] It has also been correlated with measures of mental heuristics, such as the gambler's fallacy, understanding of regression to the mean, the sunk cost fallacy, and others.[2][3][4]

Keith Stanovich found that cognitive ability is not strongly correlated with CRT scores because it will only lead to better CRT performance under certain conditions. First, the test-taker must recognize the need to override their system 1 response, and then they must have available cognitive resources to carry out the override. If the test-taker does not need to inhibit system 1 for the override, then the system 2 response immediately follows. Otherwise, they must have the capacity to sustain inhibition of system 1 in order to engage the system 2 response.[6]

Test questions and answers

The original test penned by Dr. Frederick contained only the three following questions:[1]

  1. A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball.
    How much does the ball cost?
    _____ cents
  2. If it takes 5 machines 5 minutes to make 5 widgets,
    how long would it take 100 machines to make 100 widgets?
    _____ minutes
  3. In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake,
    how long would it take for the patch to cover half of the lake?
    _____ days

The intuitive answers to these questions that "system 1" gives typically are: 10 cents, 100 minutes, and 24 days; while the correct solutions are: 5 cents, 5 minutes, and 47 days.

Limitations and alternatives

Studies have estimated that between 44 and 51% of research participants have previously been exposed to the CRT.[7][8] Those participants that are familiar with the CRT tend to outscore those with no previous exposure, which raises questions about the validity of the measure in this population.[7][8] In an effort to combat limitations associated with familiarity, researchers have developed a variety of alternative measures of cognitive reflection.[9][10][11] Recent research, however, suggests that the CRT is robust to multiple exposure, so that despite the raw score increases in experienced participants, its correlations with other variables remain unaffected [12]

See also

References
  1. Frederick, Shane (2005). "Cognitive Reflection and Decision Making". Journal of Economic Perspectives. 19 (4): 25–42. doi:10.1257/089533005775196732.
  2. Oechssler, Jörg; Roider, Andreas; Schmitz, Patrick W. (2009). "Cognitive abilities and behavioral biases" (PDF). Journal of Economic Behavior & Organization. 72 (1): 147–152. doi:10.1016/j.jebo.2009.04.018. ISSN 0167-2681.
  3. Hoppe, Eva I.; Kusterer, David J. (2011). "Behavioral biases and cognitive reflection". Economics Letters. 110 (2): 97–100. doi:10.1016/j.econlet.2010.11.015. ISSN 0165-1765.
  4. Toplak, Maggie (4 May 2011). "The Cognitive Reflection Test as a predictor of performance on heuristics-and-biases tasks" (PDF). Memory and Cognition. 39 (7): 1275–1289. doi:10.3758/s13421-011-0104-1. PMID 21541821. Retrieved 30 May 2014.
  5. Szaszi, B., Szollosi, A., Palfi, B., Aczél B., (2017) The cognitive reflection test revisited: exploring the ways individuals solve the test, Thinking and Reasoning, https://www.tandfonline.com/doi/abs/10.1080/13546783.2017.1292954
  6. Stanovich, Keith E., & West, Richard F. (2008). "On the relative independence of thinking biases and cognitive ability." Personality Processes and Individual Differences, 94(4), 672-695. doi:10.1037/0022-3514.94.4.672 http://psycnet.apa.org/journals/psp/94/4/672
  7. Haigh, Matthew (2016). "Has the Standard Cognitive Reflection Test Become a Victim of Its Own Success?". Advances in Cognitive Psychology. 12 (3): 145–149. doi:10.5709/acp-0193-5. PMC 5225989. PMID 28115997.
  8. Stieger, Stefan; Reips, Ulf-Dietrich (2016-09-06). "A limitation of the Cognitive Reflection Test: familiarity". PeerJ. 4: e2395. doi:10.7717/peerj.2395. ISSN 2167-8359. PMC 5018679. PMID 27651989.
  9. Primi, Caterina; Morsanyi, Kinga; Chiesi, Francesca; Donati, Maria Anna; Hamilton, Jayne (2016-12-01). "The Development and Testing of a New Version of the Cognitive Reflection Test Applying Item Response Theory (IRT)". Journal of Behavioral Decision Making. 29 (5): 453–469. doi:10.1002/bdm.1883. ISSN 1099-0771.
  10. Toplak, Maggie E.; West, Richard F.; Stanovich, Keith E. (2014-04-03). "Assessing miserly information processing: An expansion of the Cognitive Reflection Test". Thinking & Reasoning. 20 (2): 147–168. doi:10.1080/13546783.2013.844729. ISSN 1354-6783.
  11. "Investigating an alternate form of the cognitive reflection test". Judgment and Decision Making. 11: 99–113.
  12. Bialek, Michal; Pennycook, Gordon (2017-08-28). "The Cognitive Reflection Test is robust to multiple exposures". Behavior Research Methods. 50 (5): 1953–1959. doi:10.3758/s13428-017-0963-x. PMID 28849403.
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