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Chair Unkelbach Group | Allgemeine Psychologie II

Prof. Dr. Christian Unkelbach

Phone +49-221-470-2001

E-mailchristian.unkelbach(at)uni-koeln.de
AddressRichard-Strauss-Str. 2, 50931 Köln | Germany

Room 1.A21
Office hours Mon, 9am - 10am (Prüfungsamtsangelegenheiten bitte mit Voranmeldung)

Research interests

Valence asymmetries • Evaluative judgments • Fluency / easiness effects • Information ecologies • Evaluative conditioning • Prejudices against muslims • Sport psychology

Key Publications

  • Unkelbach, C., Fiedler, K., Bayer, M., Stegmüller, M., & Danner, D. (2008). Why positive information is processed faster: The density hypothesis. Journal of Personality and Social Psychology, 95, 36–49. doi:10.1037/0022-3514.95.1.36
  • Unkelbach, C. (2007). Reversing the truth effect: Learning the interpretation of processing fluency in judgments of truth. Journal of Experimental Psychology: Learning, Memory, and Cognition, 33, 219–230. doi:10.1037/0278-7393.33.1.219
  • Unkelbach, C., Ostheimer, V., Fasold, F., & Memmert, D. (2012). A calibration explanation of serial position effects in evaluative judgments. Organizational Behavior and Human Decision Processes, 119, 103–113. doi:10.1016/j.obhdp.2012.06.004
  • Unkelbach, C., Forgas, J. P., & Denson, T. F. (2008). The turban effect: The influence of Muslim headgear and induced affect on aggressive responses in the shooter bias paradigm. Journal of Experimental Social Psychology, 44, 1409–1413. doi:10.1016/j.jesp.2008.04.003

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All Publications

Journal Publications

  • Alves, H., Koch, A. S., & Unkelbach, C. (in press). The "Common Good" Phenomenon - Why similarities are positive and differences are negative. Journal of Experimental Psychology: General.
  • Schofield, T. P., Unkelbach, C., & Denson, T. F. (in press). Alcohol consumption increases bias to shoot at Middle Eastern but not White targets. Group Processes & Intergroup Relations. doi:10.1177/1368430215603461
  • Unkelbach, C., & Rom, S. C. (in press). A referential theory of the repetition-induced truth effect. Cognition.
  • Alves*, H., Koch*, A. S., & Unkelbach, C. (2017). Why good is more alike than bad: Processing implications. Trends in Cognitive Sciences, 21, 72–82. doi:10.1016/j.tics.2016.12.006  * shared first authorship
  • Alves, H., Koch, A., & Unkelbach, C. (2016). My friends are all alike — the relation between liking and perceived similarity in person perception. Journal of Experimental Social Psychology, 62, 103–117. doi:10.1016/j.jesp.2015.10.011
  • Förderer, S., & Unkelbach, C. (2016). Changing US attributes after CS-US pairings changes CS-attribute-assessments: Evidence for CS-US associations in attribute conditioning. Personality and Social Psychology Bulletin, 42, 350–365. doi:10.1177/0146167215626705
  • Gräf, M., & Unkelbach, C. (2016). Halo effects in trait assessment depend on information valence: Why being honest makes you industrious, but lying does not make you lazy. Personality and Social Psychology Bulletin, 42, 290–310. doi:10.1177/0146167215627137
  • Koch, A., Alves, H., Krüger, T., & Unkelbach, C. (2016). A general valence asymmetry in similarity: Good is more alike than bad. Journal of Experimental Psychology: Learning, Memory, and Cognition, 42, 1171–1192. doi:10.1037/xlm0000243
  • Koch, A., Imhoff, R., Dotsch, R., Unkelbach, C., & Alves, H. (2016). The ABC of stereotypes about groups: Agency/socioeconomic success, conservative–progressive beliefs, and communion. Journal of Personality and Social Psychology, 110, 675–709. doi:10.1037/pspa0000046
  • Unkelbach, C., & Fiedler, K. (2016). Contrastive CS-US relations reverse evaluative conditioning effects. Social Cognition, 34, 413–434. doi:10.1521/soco.2016.34.5.413
  • Alves, H., Unkelbach, C., Burghardt, J., Koch, A. S., Krüger, T., & Becker, V. D. (2015). A density explanation of valence asymmetries in recognition memory. Memory & Cognition, 43, 896–909. doi:10.3758/s13421-015-0515-5
  • Fasold, F., Memmert, D., & Unkelbach, C. (2015). A theory-based intervention to prevent calibration effects in serial sport performance evaluations. Psychology of Sport and Exercise, 18, 47–52. doi:10.1016/j.psychsport.2015.01.001
  • Förderer, S., & Unkelbach, C. (2015). Attribute conditioning: Changing attribute-assessments through mere pairings. The Quarterly Journal of Experimental Psychology, 68, 144–164. doi:10.1080/17470218.2014.939667
  • Garcia-Marques, T., Silva, R. R., Reber, R., & Unkelbach, C. (2015). Hearing a statement now and believing the opposite later. Journal of Experimental Social Psychology, 56, 126–129. doi:10.1016/j.jesp.2014.09.015
  • Memmert, D., Plessner, H., Hüttermann, S., Froese, G., Peterhänsel, C., & Unkelbach, C. (2015). Collective fit increases team performances: Extending regulatory fit from individuals to dyadic teams. Journal of Applied Social Psychology, 45, 274–281. doi:10.1111/jasp.12294
  • Newman, E. J., Garry, M., Unkelbach, C., Bernstein, D. M., Lindsay, D. S., & Nash, R. A. (2015). Truthiness and falsiness of trivia claims depend on judgmental contexts. Journal of Experimental Psychology: Learning, Memory, and Cognition, 41, 1337–1348. doi:10.1037/xlm0000099
  • Fiedler, K., & Unkelbach, C. (2014). Regressive judgment: Implications of a universal property of the empirical world. Current Directions in Psychological Science, 23, 361–367. doi:10.1177/0963721414546330
  • Förderer, S., & Unkelbach, C. (2014). The moderating role of attribute accessibility in conditioning multiple specific attributes. European Journal of Social Psychology, 44, 69–81. doi:10.1002/ejsp.1994
  • Unkelbach, C., & Memmert, D. (2014). Serial-position effects in evaluative judgments. Current Directions in Psychological Science, 23, 195–200. doi:10.1177/0963721414533701
  • Fasold, F., Memmert, D., & Unkelbach, C. (2013). Calibration processes in a serial talent test. Psychology of Sport and Exercise, 14, 488–492. doi:10.1016/j.psychsport.2013.02.001
  • Förderer, S., & Unkelbach, C. (2013). On the stability of evaluative conditioning effects: The role of identity memory, valence memory, and evaluative consolidation. Social Psychology, 44, 380–389. doi:10.1027/1864-9335/a000150
  • Unkelbach, C., Ostheimer, V., Fasold, F., & Memmert, D. (2012). A calibration explanation of serial position effects in evaluative judgments. Organizational Behavior and Human Decision Processes, 119, 103–113. doi:10.1016/j.obhdp.2012.06.004
  • Unkelbach, C., Stahl, C., & Förderer, S. (2012). Changing CS features alters evaluative responses in evaluative conditioning. Learning and Motivation, 43, 127–134. doi:10.1016/j.lmot.2012.04.003
  • Fasold, F., Memmert, D., & Unkelbach, C. (2012). Extreme judgments depend on the expectation of following judgments: A calibration analysis. Psychology of Sport and Exercise, 13, 197–200. doi:10.1016/j.psychsport.2011.11.004
  • Hütter, M., Sweldens, S., Stahl, C., Unkelbach, C., & Klauer, K. C. (2012). Dissociating contingency awareness and conditioned attitudes: Evidence of contingency-unaware evaluative conditioning. Journal of Experimental Psychology: General, 141, 539–557. doi:10.1037/a0026477
  • Unkelbach, C. (2012). Positivity advantages in social information processing. Social and Personality Psychology Compass, 6, 83–94. doi:10.1111/j.1751-9004.2011.00407.x
  • Förderer, S., & Unkelbach, C. (2012). Hating the cute kitten or loving the aggressive pit-bull: EC effects depend on CS–US relations. Cognition and Emotion, 26, 534–540. doi:10.1080/02699931.2011.588687
  • Förderer, S., & Unkelbach, C. (2011). Beyond evaluative conditioning! Evidence for transfer of non-evaluative attributes. Social Psychological and Personality Science, 2, 479–486. doi:10.1177/1948550611398413
  • Unkelbach, C., Bayer, M., Alves, H., Koch, A., & Stahl, C. (2011). Fluency and positivity as possible causes of the truth effect. Consciousness and Cognition, 20, 594–602. doi:10.1016/j.concog.2010.09.015
  • Fiedler, K., Blümke, M., & Unkelbach, C. (2011). On the adaptive flexibility of evaluative priming. Memory & Cognition, 39, 557–572. doi:10.3758/s13421-010-0056-x
  • Guastella, A. J., Kenyon, A. R., Unkelbach, C., Alvares, G. A., & Hickie, I. B. (2011). Arginine Vasopressin selectively enhances recognition of sexual cues in male humans. Psychoneuroendocrinology, 36, 294–297. doi:10.1016/j.psyneuen.2010.07.023
  • Fiedler, K., & Unkelbach, C. (2011). Lottery attractiveness and presentation mode of probability and value information. Journal of Behavioral Decision Making, 24, 99–115. doi:10.1002/bdm.685
  • Fiedler, K., Freytag, P., & Unkelbach, C. (2011). Great oaks from giant acorns grow: How causal-impact judgments depend on the strength of a cause. European Journal of Social Psychology, 41, 162–172. doi:10.1002/ejsp.750
  • Fiedler, K., & Unkelbach, C. (2011). Evaluative conditioning depends on higher order encoding processes. Cognition and Emotion, 25, 639–656. doi:10.1080/02699931.2010.513497
  • Reber, R., & Unkelbach, C. (2010). The epistemic status of processing fluency as source for judgments of truth. Review of Philosophy and Psychology, 1, 563–581. doi:10.1007/s13164-010-0039-7
  • Unkelbach, C., Schneider, H., Gode, K., & Senft, M. (2010). A turban effect, too: Selection biases against women wearing Muslim headscarves. Social Psychological and Personality Science, 1, 378–383. doi:10.1177/1948550610378381
  • Unkelbach, C., & Memmert, D. (2010). Crowd noise as a cue in referee decisions contributes to the home advantage. Journal of Sport & Exercise Psychology, 32, 483–498.
  • Memmert, D., Unkelbach, C., & Ganns, S. (2010). The impact of regulatory fit on performance in an inattentional blindness paradigm. Journal of General Psychology, 137, 129–139. doi:10.1080/00221301003645061
  • Unkelbach, C., von Hippel, W., Forgas, J. P., Robinson, M. D., Shakarchi, R. J., & Hawkins, C. (2010). Good things come easy: Subjective exposure frequency and the faster processing of positive information. Social Cognition, 28, 538–555. doi:10.1521/soco.2010.28.4.538
  • Unkelbach, C., Goldenberg, L., Müller, N., Sobbe, G., & Spannaus, N. (2010). A shooter bias in Germany against people wearing Muslims headgear. International Review of Social Psychology, 22, 181–201.
  • Stahl, C., Unkelbach, C., & Corneille, O. (2009). On the respective contributions of awareness of unconditioned stimulus valence and unconditioned stimulus identity in attitude formation through evaluative conditioning. Journal of Personality and Social Psychology, 97, 404–420. doi:10.1037/a0016196
  • Fiedler, K., Unkelbach, C., & Freytag, P. (2009). On splitting and merging categories: A regression account of subadditivity. Memory & Cognition, 37, 383–393. doi:10.3758/MC.37.4.383
  • Unkelbach, C., & Stahl, C. (2009). A multinomial modeling approach to dissociate different components of the truth effect. Consciousness and Cognition, 18, 22–38. doi:10.1016/j.concog.2008.09.006
  • Stahl, C., & Unkelbach, C. (2009). Evaluative learning with single versus multiple unconditioned stimuli: The role of contingency awareness. Journal of Experimental Psychology: Animal Behavior Processes, 35, 286–291. doi:10.1037/a0013255
  • Forgas, J. P., Goldenberg, L., & Unkelbach, C. (2009). Can bad weather improve your memory? An unobtrusive field study of natural mood effects on real-life memory. Journal of Experimental Social Psychology, 45, 254–257. doi:10.1016/j.jesp.2008.08.014
  • Plessner, H., Unkelbach, C., Memmert, D., Baltes, A., & Kolb, A. (2009). Regulatory fit as a determinant of sport performance: How to succeed in a soccer penalty-shooting. Psychology of Sport and Exercise, 10, 108–115. doi:10.1016/j.psychsport.2008.02.001
  • Unkelbach, C., Guastella, A. J., & Forgas, J. P. (2008). Oxytocin selectively facilitates recognition of positive sex and relationship words. Psychological Science, 19, 1092–1094. doi:10.1111/j.1467-9280.2008.02206.x
  • Unkelbach, C., Forgas, J. P., & Denson, T. F. (2008). The turban effect: The influence of Muslim headgear and induced affect on aggressive responses in the shooter bias paradigm. Journal of Experimental Social Psychology, 44, 1409–1413. doi:10.1016/j.jesp.2008.04.003
  • Unkelbach, C., Fiedler, K., Bayer, M., Stegmüller, M., & Danner, D. (2008). Why positive information is processed faster: The density hypothesis. Journal of Personality and Social Psychology, 95, 36–49. doi:10.1037/0022-3514.95.1.36
  • Unkelbach, C., & Memmert, D. (2008). Game management, context effects, and calibration: The case of yellow cards in soccer. Journal of Sport & Exercise Psychology, 30, 95–109.
  • Memmert, D., Unkelbach, C., Ertmer, J., & Rechner, M. (2008). Gelb oder kein Gelb? Persönliche Verwarnungen im Fußball als Kalibrierungsproblem [Yellow card or no yellow card? Soccer cautioning as a calibration problem]. Zeitschrift für Sportpsychologie, 15, 1–11. doi:10.1026/1612-5010.15.1.1
  • Unkelbach, C., Fiedler, K., & Freytag, P. (2007). Information repetition in evaluative judgments: Easy to monitor, hard to control. Organizational Behavior and Human Decision Processes, 103, 37–52. doi:10.1016/j.obhdp.2006.12.002
  • Fiedler, K., Freytag, P., & Unkelbach, C. (2007). Pseudocontingencies in a simulated classroom. Journal of Personality and Social Psychology, 92, 665–677. doi:10.1037/0022-3514.92.4.665
  • Unkelbach, C., & Plessner, H. (2007). "Category-Split" Effekte bei Urteilen über Sportlerinnen, Sportler und Sportarten ["Category-split" effects in judgments about sportswomen, sportsmen, and sports]. Zeitschrift für Sozialpsychologie, 38, 111–121. doi:10.1024/0044-3514.38.2.111
  • Unkelbach, C. (2007). Reversing the truth effect: Learning the interpretation of processing fluency in judgments of truth. Journal of Experimental Psychology: Learning, Memory, and Cognition, 33, 219–230. doi:10.1037/0278-7393.33.1.219

Book Publications

  • Unkelbach, C., & Greifeneder, R. (2013). The experience of thinking: How the fluency of mental processes influences cognition and behaviour. New York, NY: Psychology Press.
  • Unkelbach, C., & Greifeneder, R. (2013). A general model of fluency effects in judgment and decision making. In C. Unkelbach & R. Greifeneder (Eds.), The experience of thinking: How the fluency of mental processes influences cognition and behaviour (pp. 11–32). New York, NY: Psychology Press.
  • Greifeneder, R., & Unkelbach, C. (2013). Experiencing thinking. In C. Unkelbach & R. Greifeneder (Eds.), The experience of thinking: How the fluency of mental processes influences cognition and behaviour (pp. 1–7). New York, NY: Psychology Press.
  • Unkelbach, C., & Greifeneder, R. (2013). Thinking about "experiences of thinking": Fluency in six principles. In C. Unkelbach & R. Greifeneder (Eds.), The experience of thinking: How the fluency of mental processes influences cognition and behaviour (pp. 257–261). New York, NY: Psychology Press.
  • Unkelbach, C., Plessner, H., & Memmert, D. (2009). "Fit" in sports: Self-regulation and athletic performances. In J. P. Forgas, R. F. Baumeister, & D. M. Tice (Eds.), Psychology of self-regulation: Cognitive, affective, and motivational processes (pp. 93–105). New York, NY: Psychology Press.
  • Fiedler, K., Blümke, M., & Unkelbach, C. (2009). Exerting control over allegedly automatic associative processes. In J. P. Forgas, R. F. Baumeister, & D. M. Tice (Eds.), Psychology of self-regulation: Cognitive, affective, and motivational processes (pp. 249–269). New York, NY: Psychology Press.
  • Unkelbach, C., Plessner, H., & Haar, T. (2009). Soziale Kognitionen im Sport [Social Cognition in Sports]. In W. Schlicht & B. Strauss (Eds.), Enzyklopädie der Psychologie, Themenbereich D – Praxisgebiete, Serie V, Sportpsychologie: Band 1: Grundlagen der Sportpsychologie (pp. 681–717). Göttingen, Germany: Hogrefe.
  • Brand, R., Plessner, H., & Unkelbach, C. (2008). Basic psychological processes underlying referees' decision-making. In P. Andersson, P. Ayton, & C. Schmidt (Eds.), Myths and facts about football: The economics and psychology of the world's greatest sport (pp. 173–190). Newcastle, UK: Cambridge Scholars Publishing.
  • Weisbuch, M., Unkelbach, C., & Fiedler, K. (2008). Remnants of the recent past: Influences of priming on first impressions. In N. Ambady & J. J. Skowronski (Eds.), First impressions (pp. 289–312). New York, NY: Guilford Press.
  • Unkelbach, C., & Plessner, H. (2008). The sampling trap of intuitive judgments. In H. Plessner, C. Betsch, & T. Betsch (Eds.), Intuition in judgment and decision making (pp. 283–294). Mahwah, NJ: Lawrence Erlbaum Associates.
  • Fiedler, K., Blümke, M., Freytag, P., Unkelbach, C., & Koch, S. (2008). A semiotic approach to understanding the role of communication in stereotyping. In Y. Kashima, K. Fiedler, & P. Freytag (Eds.), Stereotype dynamics: Language-based approaches to the formation, maintenance, and transformation of stereotypes (pp. 95–116). Mahwah, NJ: Lawrence Erlbaum Associates.

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Academic distinctions

  • Grants:
    Emmy Noether Research Grant, German Science Foundation (DFG), 2009-2013
    Feoder Lynen Research Scholarship, Alexander von Humboldt Foundation, 2007-2008
    Fulbright Scholarship, Fulbright Commission, 1999-2000
  • Editor-in-Chief:
    Social Psychology (2013-2016)
  • Editorial boards:
    Psychological Science (2012-)
    Experimental Psychology (2013-)
    Social Psychology and Personality Science (2009-2015)
    European Journal of Social Psychology (2007-2014)
  • Associate Editor:
    Experimental Psychology (2011-2012)
    Social Psychology (2012-2013, 2016-)

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