Matthias Bluemke

Faking the IAT: Aided and Unaided Response Control on the Implicit Association Tests

One pragmatic goal of implicit tools like the Implicit Association Tests (IAT) is to rule out self-presentation and controlled responding. Three experiments examined whether the IAT meets this goal, using Turkish and German groups along with positive and negative traits. Experiment 1 was an Internet study. After completing a naïve IAT pretest, participants were instructed to fake on a posttest in 3 graded conditions that differed in the explicitness of faking instructions. Experiment 2 replicated and extended the approach in the laboratory, including a no-pretest condition. Results demonstrate that participants who intended to fake were successful, provided the experience of a pretest. Experiment 3 ruled out an alternative account of faking in terms of pretest experience. Faking was mostly due to slow-down on compatible trials, but a notable speed-up on incompatible trials also occurred. Faking remained inconspicuous, especially with nonblatant instructions; experts failed to identify faked data sets.

Unresolved problems with the “I”, the “A”, and the “T”: A logical and psychometric critique of the Implicit Association Test (IAT)

The Implicit Association Test (IAT) had already gained the status of a prominent assessment procedure before its psychometric properties and underlying task structure were understood. The present critique addresses five major problems that arise when the IAT is used for diagnostic inferences: (1) the asymmetry of causal and diagnostic inferences; (2) the viability of the underlying association model; (3) the lack of a testable model underlying IAT-based inferences; (4) the difficulties of interpreting difference scores; and (5) the susceptibility of the IAT to deliberate faking and strategic processing. Based on a theoretical reflection of these issues, and a comprehensive survey of published IAT studies, it is concluded that a number of uncontrolled factors can produce (or reduce) significant IAT scores independently of the personality attribute that is supposed to be captured by the IAT procedure.

The Influence of Violent and Nonviolent Computer Games on Implicit Measures of Aggressiveness

We examined the causal relationship between playing violent video games and increases in aggressiveness by using implicit measures of aggressiveness, which have become important for accurately predicting impulsive behavioral tendencies. Ninety-six adults were randomly assigned to play one of three versions of a computer game that differed only with regard to game content (violent, peaceful, or abstract game), or to work on a reading task. In the games the environmental context, mouse gestures, and physiological arousal-as indicated by heart rate and skin conductance-were kept constant. In the violent game soldiers had to be shot, in the peaceful game sunflowers had to be watered, and the abstract game simply required clicking colored triangles. Five minutes of play did not alter trait aggressiveness, yet an Implicit Association Test detected a change in implicit aggressive self-concept. Playing a violent game produced a significant increase in implicit aggressive self-concept relative to playing a peaceful game. The well-controlled study closes a gap in the research on the causality of the link between violence exposure in computer games and aggressiveness with specific regard to implicit measures. We discuss the significance of importing recent social-cognitive theory into aggression research and stress the need for further development of aggression-related implicit measures.

Predicting Voting Behavior with Implicit Attitude Measures The 2002 German Parliamentary Election

Implicit measures of attitudes are commonly seen to be primarily capable of predicting spontaneous behavior. However, evidence exists that these measures can also improve the prediction of more deliberate behavior. In a prospective study we tested the hypothesis that Implicit Association Test (IAT) measures of the five major political parties in Germany would improve the prediction of voting behavior over and above explicit self-report measures in the 2002 parliamentary elections. Additionally we tested whether general interest in politics moderates the relationship between explicit and implicit attitude measures. The results support our hypotheses. Implications for predictive models of explicitly and implicitly measured attitudes are discussed.

Do implicit attitudes predict actual voting behavior particularly for undecided voters

The prediction of voting behavior of undecided voters poses a challenge to psychologists and pollsters. Recently, researchers argued that implicit attitudes would predict voting behavior particularly for undecided voters whereas explicit attitudes would predict voting behavior particularly for decided voters. We tested this assumption in two studies in two countries with distinct political systems in the context of real political elections. Results revealed that (a) explicit attitudes predicted voting behavior better than implicit attitudes for both decided and undecided voters, and (b) implicit attitudes predicted voting behavior better for decided than undecided voters. We propose that greater elaboration of attitudes produces stronger convergence between implicit and explicit attitudes resulting in better predictive validity of both, and less incremental validity of implicit over explicit attitudes for the prediction of voting behavior. However, greater incremental predictive validity of implicit over explicit attitudes may be associated with less elaboration.

When autocratic leaders become an option—Uncertainty and self-esteem predict implicit leadership preferences.

We investigated the impact of uncertainty on leadership preferences and propose that the conjunction of self-esteem level and stability is an important moderator in this regard. Self-threatening uncertainty is aversive and activates the motivation to regain control. People with high and stable self-esteem should be confident of achieving this goal by self-determined amelioration of the situation and should therefore show a stronger preference for democratic leadership under conditions of uncertainty. By contrast, people with low and unstable self-esteem should place their trust and hope in the abilities of powerful others, resulting in a preference for autocratic leadership. Studies 1a and 1b validate explicit and implicit leadership measures and demonstrate a general prodemocratic default attitude under conditions of certainty. Studies 2 and 3 reveal a democratic reaction for individuals with stable high self-esteem and a submissive reaction for individuals with unstable low self-esteem under conditions of uncertainty. In Study 4, this pattern is cancelled out when individuals evaluate leadership styles from a leader instead of a follower perspective.

Fear of Death and Supernatural Beliefs: Developing a New Supernatural Belief Scale to Test the Relationship

Fear of death features in both historical and contemporary theories of religion, but the relationship between death anxiety and religious belief is still ambiguous, largely due to the use of inappropriate or imprecise measures. The current studies therefore aimed to develop a valid, targeted measure of respondents’ tendency towards religious belief, the ‘Supernatural Belief Scale’ (SBS), and to use the SBS to examine the relation between death anxiety and religious belief. Results indicate that the SBS shows high reliability and convergent validity and that its relation to death anxiety depends on participants’ religious identification: ‘religious’ participants fear death less the stronger their religious beliefs, whereas ‘non–religious’ participants are more inclined towards religious belief the more they fear death. These studies contribute a new measurement tool for research on religious belief and provide a starting point for an experimental integration of discrepant research findings. Copyright

On the Validity of Idiographic and Generic Self-Concept Implicit Association Tests: A Core-Concept Model

We present a core–concept model (CCM) suggesting that stimulus centrality is an important factor in category representations in implicit measures. We tested the hypothesis that idiographic stimuli (first name, birthday) are more central and therefore assess self–concept in Implicit Association Tests (IATs) more validly than generic and nonspecific stimuli (me, you). Superior validity of the idiographic variant emerged across three different domains of self–concept. First, an idiographic self–esteem IAT displayed higher correlations than a generic IAT with self–assessments and observer–assessments of self–esteem. Second, an idiographic body scheme–IAT predicted subjective ratings of body image and objective body–mass index. Third, an idiographic aggressiveness–IAT had higher incremental validity for unprovoked aggression when interacting with explicit measures of aggressiveness. We conclude that idiographic stimuli focus participants’ attention on the core features of the self, hence, tapping into self–related associations to a stronger degree than generic stimuli. Copyright

Base rate effects on the IAT

We investigated the influence of stimulus base rates on the Implicit Association Test (IAT). Using an East/West-German attitude-IAT, we demonstrated that both overall response speed and differential response speed underlying IAT effects depend on the relative frequencies of the stimulus categories. First, when those stimuli that are more common in reality also occurred more frequently in the stimulus list, response speed generally increased. Second, IAT effects increased when congruent blocks profited from the compatibility of frequency-based response biases (i.e., frequent target stimuli and frequent valence stimuli mapped onto the same response key), whereas IAT effects decreased when incongruent trial blocks profited from response compatibility. These findings demonstrate that the stimulus context moderates the magnitude of the IAT effect. Simultaneously, they highlight the need to explore the extent to which implicit measures reflect properties of the task or the environment rather than attributes of test-takers.

On the adaptive flexibility of evaluative priming

If priming effects serve an adaptive function, they have to be both robust and flexible. In four experiments, we demonstrated regular evaluative-priming effects for relatively long stimulus-onset asynchronies, which can, however, be eliminated or reversed strategically. When participants responded to both primes and targets, rather than only to targets, the standard congruity effect disappeared. In Experiments 1a–1c, this result was regularly obtained, independently of the prime response (valence or gender classification) and the response mode (pronunciation or keystroke). In Experiment 2, we showed that once the default congruity effect was eliminated, strategic-priming effects reflected the statistical contingency between prime valence and target valence. Positive contingencies produced congruity, whereas negative contingencies produced equally strong incongruity effects. Altogether, these findings are consistent with an adaptive-cognitive perspective, which highlights the role of flexible strategic processes in working memory as opposed to fixed structures in semantic long-term memory or in the sensorimotor system.