Minimizing the influence of recoding in the Implicit Association Test: The Recoding-Free Implicit Association Test (IAT-RF)

Recoding processes can influence the Implicit Association Test (IAT; Greenwald, McGhee, & Schwartz, 1998) in a way that impedes an unequivocal interpretation of the resulting compatibility effects. We present a modified version of the IAT that aims to eliminate recoding, the IAT-RF (short for “IAT–recoding free”). In the IAT-RF, compatible and incompatible assignments of categories to responses switch randomly between trials within a single experimental block. Abandoning an extended sequence of consistent category–response mappings undermines recoding processes in the IAT-RF. Two experiments reveal that the IAT-RF is capable of assessing compatibility effects between the nominally defined categories of the task and effectively prevents recoding. By enforcing a processing of the stimuli in terms of their task-relevant category membership, the IAT-RF eliminates the confounding of compatibility effects with task switch costs and becomes immune against biased selections of stimuli.     

When old and frail is not the same: Dissociating category and stimulus effects in four implicit attitude measurement methods

It is not always clear whether implicit attitude measures assess the attitude towards single stimuli or the attitude towards categories. Nevertheless, this is important to know—both for interpreting implicit attitude effects and for selecting the test that is most appropriate for individual research aims. We investigated this for four implicit measures: the standard Implicit Association Test (IAT), the IAT-recoding free (IAT-RF), and two versions of the Extrinsic Affective Simon Task (EAST, identification (ID)-EAST). Effects in the standard IAT reflect evaluations of categories and single stimuli, whereas the IAT-RF measures attitudes towards categories only. Both versions of the EAST measure evaluations of single stimuli independently from the evaluation of categories. Three different effect sources are distinguished: attitudes towards single stimuli (IAT; EAST and ID-EAST), attitudes towards target categories (IAT and IAT-RF), and processes of recoding (IAT), which do not necessarily reflect attitudes.     

Processing fluency as a predictor of salience asymmetries in the Implicit Association Test

The Implicit Association Test (IAT) is the most popular indirect measure of attitudes in social psychology. Rothermund and Wentura (2001, 2004) suggested that artifacts such as salience asymmetries are a source of compatibility effects in the IAT, and, therefore, the IAT does not necessarily measure attitude. They claim that salience asymmetries correspond with visual search asymmetries, such that the stimulus categories that are more quickly detected in a visual search task are also compatible in the IAT. We propose that processing fluency is a more reliable indicator of salience asymmetries in the IAT than are visual search asymmetries. To test this hypothesis, we set processing fluency in opposition to visual search asymmetry to see which variable better predicted IAT effects. In one pair of categories, the category that was more quickly detected in visual search was also more fluently processed in a binary classification task. In a second pair of categories, the category that was more quickly detected in visual search was the less fluently processed category. Across four experiments, we demonstrated that compatibility effects in the IAT corresponded with differences in processing fluency between categories, rather than with visual search asymmetries.     

Two bases of the compatibility effect in the Implicit Association Test (IAT)

Four experiments are reported, investigating the mechanisms underlying the compatibility effect in the Implicit Association Test (IAT; Greenwald, McGhee, & Schwartz, 1998). All experiments involved two IATs: flower IAT, in which the target categories were flowers and insects, and number IAT, involving even and odd numbers as target categories. In Experiment 1, using the standard IAT procedure, the two IATs produced equal IAT effects, despite large differences in rated valence contrast between flowers and insects and between even and odd numbers. Experiment 2 used a procedure developed by Klauer and Mierke (2005) and produced results consistent with the view that valence plays a role in the flower IAT but not in the number IAT. Experiments 3 and 4 used manipulations similar to those developed by Rothermund and Wentura (2004) and showed that these manipulations affected the flower IAT and number IAT differently. The results provide converging evidence that the two types of IAT effects—one based on valence and one based on familiarity—are empirically dissociable.     

Two bases of the compatibility effect in the Implicit Association Test (IAT)

Four experiments are reported, investigating the mechanisms underlying the compatibility effect in the Implicit Association Test (IAT; Greenwald, McGhee, & Schwartz, 1998). All experiments involved two IATs: flower IAT, in which the target categories were flowers and insects, and number IAT, involving even and odd numbers as target categories. In Experiment 1, using the standard IAT procedure, the two IATs produced equal IAT effects, despite large differences in rated valence contrast between flowers and insects and between even and odd numbers. Experiment 2 used a procedure developed by Klauer and Mierke (2005) and produced results consistent with the view that valence plays a role in the flower IAT but not in the number IAT. Experiments 3 and 4 used manipulations similar to those developed by Rothermund and Wentura (2004) and showed that these manipulations affected the flower IAT and number IAT differently. The results provide converging evidence that the two types of IAT effects-one based on valence and one based on familiarity-are empirically dissociable.Experiments 1and 2 reported in this paper were conducted as an honours project by Marie Peek-O'Leary under the supervision of Sachiko Kinoshita. Parts of this paper were presented at the 44th Annual Meeting of the Psychonomic Society held in Vancouver, Canada, in November, 2003.     

IAT效应的心理机制研究述评

介绍了IAT效应的心理机制的主要理论,包括概念联结提取模型、刺激-反应匹配理论、随机游动模型、任务集切换代价理论和图形-背景不对称性理论,并提出除概念联结提取模型外,其他理论关注另外可能的因素对IAT效应的作用,从而间接否定IAT效应和概念联结的对应联系,消解了IAT作为内隐测量方法的有效性。最后分析了这些理论的不足,认为IAT研究需要深入探讨个体在IAT反应中的心理活动过程。     

Measuring task-switching ability in the Implicit Association Test

Recently, the role of method-specific variance in the Implicit Association Test (IAT) was examined (McFarland & Crouch, 2002; Mierke & Klauer, 2003). This article presents a new content-unspecific control task for the assessment of task-switching ability within the IAT methodology. Study 1 showed that this task exhibited good internal consistency and stability. Studies 2-4 examined method-specific variance in the IAT and showed that the control task is significantly associated with conventionally scored IAT effects of the IAT-Anxiety. Using the D measures proposed by Greenwald, Nosek, and Banaji (2003), the amount of method-specific variance in the IAT-Anxiety could be reduced. Possible directions for future research are outlined.     

Mere acceptance produces apparent attitude in the Implicit Association Test

Two experiments examined mere acceptance effects in the Implicit Association Test (IAT). They tested whether accepting a stimulus as conforming to a rule produces responding consistent with positive attitude in the IAT. In Experiment 1, accepted stimuli were more easily categorized with pleasant personality characteristics than rejected stimuli; they were preferred according to the logic of the IAT. Accepted word stimuli were also responded to faster overall, suggesting that it was easier to make the accept than the reject response. In Experiment 2, numerical stimuli that conformed to a rule showed the same IAT preference effect over non-confirming stimuli, even when the rule conforming stimuli were more difficult to categorize. Three sources of this apparent preference for rule-conforming stimuli are considered: (1) the semantic relatedness of the concepts “accept” and “pleasant” on the one hand, and “reject” and “unpleasant” on the other; (2) that rejected non-category members are more salient (‘pop-out’) and thus are more easily categorized with the more salient unpleasant personality characteristics; or (3) that accepting rule-conforming stimuli is experienced as a pleasant event. Regardless of the mechanism underlying the mere acceptance effect, the IAT can produce apparent preferences for stimuli towards which participants have no positive attitude.     

Intentional faking of the single category Implicit Association Test and the Implicit Association Test

The Implicit Association Test (IAT) provides a relative measure of implicit association strengths between target and attribute categories. In contrast, the Single Category Implicit Association Test (SC-IAT) measures association strength with a single attribute category. This can be advantageous if a complementary category--as used in the IAT--cannot be composed or is undesired. If the SC-IAT is to be a meaningful supplement to the IAT, it should meet the same requirements. In an online experiment with a large and heterogeneous sample, the fakability of both implicit measures was investigated when measuring anxiety. Both measures were fakable through specific instruction (e.g., "Slow down your reactions") but unfakable through nonspecific faking instruction even though nonspecific instruction was given immediately before the critical blocks (e.g., "Alter your reaction times"). When comparing the methodological quality of both implicit measures, the SC-IAT had lower internal consistency than the IAT. Moreover, with specific faking instructions, the SC-IAT was possible to fake to a larger extent than the IAT.     

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.     

Greenwald提出的内隐联想测验介绍

内隐联想测验(Implicit Association Test,简称IAT)是Greenwald等于1998年提出的一种新的内隐社会认知的研究方法,其采用的是一种计算机化的辨别分类任务,以反应时为指标,通过对概念词和属性词之间的自动化联系的评估进而来对个体的内隐态度等进行间接测量。该文先对内隐联想测验的由来、原理进行了介绍,再从性能及应用两方面对已有的相关研究进行了归纳、整理和论述。最后,通过分析指出该方法符合现代心理测量学的最新发展方向,将有着强大的生命力。     

Measuring evaluative conditioning using the Implicit Association Test

When a neutral stimulus is paired with a stimulus that has strong affective properties, these properties often appear to be transferred to the neutral stimulus. This learning has been termed evaluative conditioning. In two experiments, participants first learned the ‘meanings’ of four non-words. Two of these meanings were affectively positive, and two were affectively negative. Transfer of affect was measured in the Implicit Association Test (IAT). In the IAT, a participant’s affective response to an item is inferred from his or her ability to categorise that item with other pleasant and unpleasant stimuli. An item easily categorised with other liked stimuli is deemed to be liked itself. In both experiments, evidence for transfer of affect was observed in the IAT. Thus, non-words given pleasant meanings in training (evaluative conditioning) were more easily categorised with pleasant than unpleasant personality characteristics, compared to non-words given unpleasant meanings. The results suggest that the IAT is a useful way to test for evaluative conditioning. It is both sensitive to the transfer of affective properties from one stimulus to another, and, because affect is measured indirectly, the results are unlikely to be due to the demand characteristics of the experiment.     

幼儿友好型内隐联想测验的建构及有效性

本研究依据经典IAT (Implicit Association Test)的核心原理构建了幼儿友好型内隐联想测验(Preschooler-friendly Implicit Association Test, PSF-IAT)。它由两部分联结任务组成, 以反应时为指标, 通过对概念刺激和属性刺激之间自动化联系的评估进而对幼儿的内隐态度进行间接测量。本研究采用两种方式对PSF-IAT范式的适用性进行验证：首先, 将PSF-IAT用于测试幼儿对花和虫的态度, 检验该范式在非社会范畴概念态度研究中的可行性; 其次, 将PSF-IAT用于测试幼儿内隐种族态度, 并验证其与另一种幼儿内隐态度测试方法间结果的相关性, 检验该范式在社会范畴概念态度研究中的可行性。研究结果表明, PSF-IAT符合学前儿童认知发展与行为反应的特点, 能有效测量幼儿的内隐态度。     

Discriminating between the effects of valence and salience in the Implicit Association Test

The Implicit Association Test (IAT) is the most widely used indirect measure of attitudes in social psychology. It has been suggested that artefacts such as salience asymmetries and familiarity can influence performance on the IAT. Chang and Mitchell (2009) proposed that the ease with which IAT stimuli are classified (classification fluency) is the common mechanism underlying both of these factors. In the current study, we investigated the effect of classification fluency on the IAT and trialled a measure-the split IAT-for dissociating between the effects of valence and salience in the IAT. Across six experiments, we examined the relationship between target classification fluency and salience asymmetries in the IAT. In the standard IAT, the more fluently classified target category was, all else being equal, compatible with pleasant attributes over unpleasant attributes. Furthermore, the more fluently classified target category was more easily classified with the more salient attribute category in the split IAT, independent of evaluative associations. This suggests that the more fluently classified category is also the more salient target category.     

Attitudes and the Implicit Association Test.

Three studies examined the relationship between the Implicit Association Test (IAT) and explicit attitudes. In the 1st and all subsequent studies, the lack of any correlation between the IAT and explicitly measured attitudes supports the view that the IAT is independent from explicit attitudes. Study 2 examined the relationships among the IAT, explicit attitudes, and behavior and found that the explicit attitudes predicted behavior but the IAT did not. Finally, in Study 3 it was found that the IAT was affected by exposing participants to new associations between attitude objects, whereas the explicit attitudes remained unchanged. Taken together, these results support an environmental association interpretation of the IAT in which IAT scores reflect the associations a person has been exposed to in his or her environment rather than the extent to which the person endorses those evaluative associations.     

Assessing individual differences in achievement motivation with the Implicit Association Test

The authors examined the validity of an Implicit Association Test (Greenwald, McGhee, & Schwartz, 1998) for assessing individual differences in achievement tendencies. Eighty-eight students completed an IAT and explicit self-ratings of achievement orientation, and were then administered a mental concentration test that they performed either in the presence or in the absence of achievement-related feedback. Implicit and explicit measures of achievement orientation were uncorrelated. Under feedback, the IAT uniquely predicted students’ test performance but failed to predict their self-reported task enjoyment. Conversely, explicit self-ratings were unrelated to test performance but uniquely related to subjective accounts of task enjoyment. Without feedback, individual differences in both performance and enjoyment were independent of differences in either of the two achievement orientation measures.     

Process components of the Implicit Association Test: a diffusion-model analysis

The authors present a diffusion-model analysis of the Implicit Association Test (IAT). In Study 1, the IAT effect was decomposed into 3 dissociable components: Relative to the compatible phase, (a) ease and speed of information accumulation are lowered in the incompatible phase, (b) more cautious speed-accuracy settings are adopted, and (c) nondecision components of processing require more time. Studies 2 and 3 assessed the nature of interindividual differences in these components. Construct-specific variance in the IAT relating to the construct to be measured (such as implicit attitudes) was concentrated in the compatibility effect on information accumulation (Studies 2 and 3), whereas systematic method variance in the IAT was mapped on differential speed-accuracy settings (Study 3). Implications of these dissociations for process theories of the IAT and for applications are discussed.     

Understanding and using the Implicit Association Test: II. Method variables and construct validity

The Implicit Association Test (IAT) assesses relative strengths of four associations involving two pairs of contrasted concepts (e.g., male-female and family-career). In four studies, analyses of data from 11 Web IATs, averaging 12,000 respondents per data set, supported the following conclusions: (a) sorting IAT trials into subsets does not yield conceptually distinct measures; (b) valid IAT measures can be produced using as few as two items to represent each concept; (c) there are conditions for which the administration order of IAT and self-report measures does not alter psychometric properties of either measure; and (d) a known extraneous effect of IAT task block order was sharply reduced by using extra practice trials. Together, these analyses provide additional construct validation for the IAT and suggest practical guidelines to users of the IAT.     

Assessing acute stress with the Implicit Association Test

Assessments of acute stress using self-report questionnaires can be biased by various factors, including social desirability. The present study used a bias-free method, the Implicit Association Test (IAT), to assess stress. Unlike a previous study (Schmukle & Egloff, 2004) in which acute stress was not detected with the IAT, this study manipulated stress by generating test anxiety and threatening self-esteem. The results revealed that the IAT effect was greater in the high-stress group than in the low-stress group. Participants in the high-stress group associated their concept of self with the concept of anxiety more strongly than did those in the low-stress group. This result suggests that the IAT is a sensitive measure for detecting group differences in acute stress.     

Convergent,Discriminant, and Incremental Validity of the Pictorial Attitude Implicit Association Test and the Picture Story Exercise as Measures of the Implicit Power Motive

The Pictorial Attitude Implicit Association Test (PA‐IAT) has recently been proposed as new measure of implicit motives. We report a study that provides the first evidence for the convergent validity of the PA‐IAT by showing that the PA‐IAT correlates significantly with a standard measure of implicit motives [i.e. the Picture Story Exercise (PSE)]. Discriminant validity of the PA‐IAT was verified in the sense that the PA‐IAT shared virtually no common variance with explicit motive measures. Our analyses revealed that the PA‐IAT and PSE can best be conceived as related but distinct measures. We further showed that the PA‐IAT had incremental validity in predicting performance on a memory recall task over and above the PSE. In general, our results confirm that the PA‐IAT is a valid measure of implicit motives and can serve as valid alternative to the PSE. Copyright © 2012 John Wiley & Sons, Ltd.