Exploration or imitation? The effect of music on 4-week-old infants' tongue protrusions

In a newborn imitation paradigm, an auditory stimulus--music--replaced the standard adult behavioral model. Alternating intervals of music and silence affected 4-week-old infants' rates of tongue protruding--evidence that tongue protruding is a general response to interesting distal stimuli.     

Behavioural adaptation or constraint? The effect of curve proximity on driving behaviour

Horizontal curves are typically associated with increased crash risk when compared with straight roads, but recent analyses have suggested that having more frequent sharp curves decreases the relative crash risk posed by each curve. Here, 90 drivers completed a simulated rural drive with either high proximity (160 m straight tangent between curves) or low proximity (1200 m tangent) curves. Curve proximity had a significant effect on approach speeds, with drivers in the high proximity curve drive showing significantly lower mean and maximum approach speeds before entering the curve. However, they also showed an unexpected tendency to higher speeds while negotiating the curve itself. The current study provides direct empirical evidence that driving behaviour on approach to a given curve is significantly affected by the proximity of other curves, and therefore highlights the need to factor in the characteristics of the road on approach to the curve, as well as the features of the curve itself when assessing risk.     

When do spatial abilities support student comprehension of STEM visualizations?

Spatial visualization abilities are positively related to performance on science, technology, engineering, and math tasks, but this relationship is influenced by task demands and learner strategies. In two studies, we illustrate these interactions by demonstrating situations in which greater spatial ability leads to problematic performance. In Study 1, chemistry students observed and explained sets of simultaneously presented displays depicting chemical phenomena at macroscopic and particulate levels of representation. Prior to viewing, the students were asked to make predictions at the macroscopic level. Eye movement analyses revealed that greater spatial ability was associated with greater focus on the prediction-relevant macroscopic level. Unfortunately, that restricted focus was also associated with lower-quality explanations of the phenomena. In Study 2, we presented the same displays but manipulated whether participants were asked to make predictions prior to viewing. Spatial ability was again associated with restricted focus, but only for students who completed the prediction task. Eliminating the prediction task encouraged attempts to integrate the displays that related positively to performance, especially for participants with high spatial ability. Spatial abilities can be recruited in effective or ineffective ways depending on alignments between the demands of a task and the approaches individuals adopt for completing that task.     

The effect of object–valence relations on automatic evaluation

Two experiments tested the effect of co-occurrence of a target object with affective stimuli on automatic evaluation of the target when the relation between the target and the affective stimuli suggests that they have opposite valence. Participants learned about targets that ended an unpleasant noise or a pleasant music. The valence of such targets is opposite to the valence of the affective stimuli that co-occur with them. Participants reported preference for targets that ended noise over targets that ended music, but automatic evaluation measures revealed the opposite preference. This suggests that automatic evaluation is sensitive to co-occurrence between stimuli more than to the relation between the stimuli, and that relational information has a stronger influence on deliberate evaluation than on automatic evaluation. These conclusions support the associative-propositional evaluation model (Gawronski & Bodenhausen, 2006), and add evidence regarding the sensitivity of the evaluative-conditioning effect to relational information.     

The effect of question order on evaluations of test performance: Can the bias dissolve?

Question difficulty order has been shown to affect students’ global postdictions of test performance. We attempted to eliminate the bias by letting participants experience the question order manipulation multiple times. In all three experiments, participants answered general knowledge questions and self-evaluated their performance. In Experiment 1, participants studied questions and answers in easy–hard or hard–easy question order prior to taking a test in the same order. In Experiment 2, participants took the same test twice in the opposite question order (easy–hard then hard–easy, or hard–easy then easy–hard). In Experiment 3, participants took two different tests in the opposite question order (easy–hard then hard–easy, or hard–easy then easy–hard). In all three experiments, we were unable to eliminate the bias, which suggests that repeated exposure is insufficient to overcome a strong initial anchor.     

Does changing the reference frame affect infant categorization of the spatial relation BETWEEN?

Past research has shown that variation in the target objects depicting a given spatial relation disrupts the formation of a category representation for that relation. In the current research, we asked whether changing the orientation of the referent frame depicting the spatial relation would also disrupt the formation of a category representation for that relation. Experiments 1 to 3 provided evidence that 6- and 7-month-olds formed a category representation for BETWEEN when a diamond shape was depicted in different locations between two vertical or horizontal reference bars during familiarization and in a novel location between the same orientation of bars during test. By contrast, in Experiment 4, same-age infants did not form a category representation for BETWEEN when the diamond shape was depicted between two vertical (or horizontal) bars during familiarization and between two horizontal (or vertical) bars during test. Moreover, in Experiment 5, 9- and 10-month-olds did form a category representation for BETWEEN when the orientation of the referent bars depicting the relation changed from familiarization to test. The findings suggest that the formation of category representations for spatial relations by infants is affected by changes to either target (figure) or referent (ground).     

Is it culture or is it language? Examination of language effects in cross-cultural research on categorization

Differences in reasoning styles between Chinese and European Americans held even when controlling for the language of testing. Bilingual Chinese organized objects in a more relational and less categorical way than European Americans, whether tested in English or in Chinese. Thus, culture affects categorization independent of the testing language. Nevertheless, language affected some Chinese bilinguals' categorization. The responses of Chinese from the Mainland and Taiwan were more relational when tested in Chinese than when tested in English. Responses of Chinese from Hong Kong and Singapore were equally relational when tested in Chinese and in English. Age and context of learning English are discussed to explain the differential language effects among different Chinese groups. Theoretical and methodological implications are discussed.     

Can students evaluate their understanding of cause-and-effect relations? The effects of diagram completion on monitoring accuracy

For effective self-regulated study of expository texts, it is crucial that learners can accurately monitor their understanding of cause-and-effect relations. This study aimed to improve adolescents' monitoring accuracy using a diagram completion task. Participants read six texts, predicted performance, selected texts for restudy, and were tested for comprehension. Three groups were compared, in which learners either completed causal diagrams immediately after reading, completed them after a delay, or received no-diagram control instructions. Accuracy of predictions of performance was highest for learning of causal relations following delayed diagram completion. Completing delayed diagrams focused learners specifically on their learning of causal relations, so this task did not improve monitoring of learning of factual information. When selecting texts for restudy, the participants followed their predictions of performance to the same degree, regardless of monitoring accuracy. Fine-grained analyses also showed that, when completing delayed diagrams, learners based judgments on diagnostic cues that indicated actual understanding of connections between events in the text. Most important, delayed diagram completion can improve adolescents' ability to monitor their learning of cause-and-effect relations.     

Why do I study? The moderating effect of attachment style on academic motivation

Past research has shown the importance of considering close others' interests when pursuing goals, but no research has examined potential moderators of this effect. Two studies examined how attachment style moderates the association between reasons for studying and academic outcomes. In Study 1, 119 participants reported their attachment style, the reasons why they study, and their study habits. As predicted, the association between relational reasons and studying was positive for secure individuals and negative for avoidant individuals. In Study 2, 195 participants reported their attachment style and reasons for studying, as well as their GPA and academic well-being. As predicted, the association between relational reasons and GPA was positive for secure individuals, whereas the associations between personal reasons for studying and academic well-being were positive for avoidant individuals. These results indicate the importance of considering individual differences as moderators of the association between goal motives and outcomes.     

The cradle of categorization: Is the basic level basic?

A common assumption in the developmental literature is that the earliest kind of conceptual categories to be formed are basic-level categories. A corollary assumption is that superordinate categories are formed after, and out of, previously acquired basic-level categories. Two experiments using an object-manipulation task explored these assumptions by studying response to a variety of categories in children aged from 12 to 20 months. The first experiment examined responses to basic-level categories (dogs vs. cars),superordinate categories (animals vs. vehicles), and contextual categories (kitchen things vs. bathroom things). At all ages tested, the children performed best on the basic-level categories but, even at 12 months of age, some children were responsive to the superordinate and contextual categories. By 20 months of age, approximately half of the children showed such sensitivity. The second experiment showed that 16- and 20-month-olds differentiated basic-level categories only when the categorical contrasts were taken from different superordinate classes (e.g., dogs vs. cars) and not when the categories were drawn from the same superordinate class (e.g., dogs vs. horses). The data suggest that basic-levels categories are not the first kind of conceptual categories to be formed. Instead, it appears that children may form more global categories, with basic-level differentiation occurring later.     

Plasticity and language: an example of the Baldwin effect?

In recent years, many scholars have suggested that the Baldwin effect may play an important role in the evolution of language. However, the Baldwin effect is a multifaceted and controversial process and the assessment of its connection with language is difficult without a formal model. This paper provides a first step in this direction. We examine a game-theoretic model of the interaction between plasticity (represented by Herrnstein reinforcement learning) and evolution in the context of a simple language game. Additionally, we describe three distinct aspects of the Baldwin effect: the Simpson–Baldwin effect, the Baldwin expediting effect and the Baldwin optimizing effect. We find that a simple model of the evolution of language lends theoretical plausibility to the existence of the Simpson–Baldwin and the Baldwin optimizing effects in this arena, but not the Baldwin expediting effect.     

The effect of eye size on discriminating faces: Can infants recognize facial uncanniness?

Infants' ability to recognize uncanny human faces increases during the first year of life. In turn, their ability to recognize faces of other species declines at almost the same period (perceptual narrowing). In the current study, we aimed to clarify the relationship between the perception of uncanniness of faces and perceptual narrowing in infants and adults. We used the “uncanny valley task,” in which the participants were required to discriminate the faces of humans and monkeys by different eye size. Results showed that 3‐ to 5‐month‐old infants could not discriminate either monkey or human faces by eye size, whereas 6‐ to 8‐month olds could. Adults showed higher discrimination performance for human than monkey faces and perceived the human faces with extremely large or small eyes as exceedingly eerie. Our results suggest that perception of uncanniness of faces is formed after perceptual narrowing.     

Can societal language amendments change gender representation? The case of Norway

This study investigates the influence of stereotypical information and the grammatical masculine on the representation of gender in Norwegian by applying a sentence evaluation paradigm. In this study participants had to decide whether a second sentence containing explicit information about the gender of one of more of the characters (e.g. . . . one of the women . . . ) was a sensible continuation of a first sentence introducing a role name (e.g. The spies came out . . . ). Participants' representations were biased by the stereotypicality of the role names when reading female (e.g. nurses) and male (e.g. pilots) stereotyped role names (replicating findings from the English sample in a previous publication), but male biased when reading neutral role names (replicating findings from the French and the German samples in a previous publication).     

The SNARC effect: an instance of the Simon effect?

Our aim was to investigate the relations between the Spatial-Numerical Association of Response Codes (SNARC) effect and the Simon effect. In Experiment 1 participants were required to make a parity judgment to numbers from 1 to 9 (without 5), by pressing a left or a right key. The numbers were presented to either the left or right side of fixation. Results showed the Simon effect (left-side stimuli were responded to faster with the left hand than with the right hand whereas right-side stimuli were responded to faster with the right hand), and the SNARC effect (smaller numbers were responded to faster with the left hand than with the right hand, whereas larger numbers were responded to faster with the right hand). No interaction was found between the Simon and SNARC effects, suggesting that they combine additively. In Experiment 2 the temporal distance between formation of the task-relevant non-spatial stimulus code and the task-irrelevant stimulus spatial code was increased. As in Experiment 1, results showed the presence of the Simon and SNARC effects but no interaction between them. Moreover, we found a regular Simon effect for faster RTs, and a reversed Simon effect for longer RTs. In contrast, the SNARC effect did not vary as a function of RT. Taken together, the results of the two experiments show that the SNARC effect does not simply constitute a variant of the Simon effect. This is considered to be evidence that number representation and space representation rest on different neural (likely parietal) circuits.     

Too many Asians in universities? The effect of social dominance orientation on support for admissions limits

This paper tests the hypothesis that support for limits on the admission of Asian students into universities is motivated by people’s social motivation—namely, the desire to maintain the status hierarchy. Study 1 found that, among participants who evaluated a proposed limit to the number of Asian applicants admitted to universities, social dominance orientation (SDO) was positively related to policy support. Conversely, among participants who evaluated a proposed limit on White admits, SDO was negatively related to policy support. Study 2 found that the perceived threat of the group getting admitted at high rates explained differential support of policies that seek to limit group-specific admissions. In all, these findings suggest that attitudes toward changes in campus demographics may be rooted in a desire to maintain the status hierarchy.     

The syntax of English idioms: Can the dog be put on?

An idiom is a collection of words whose meaning as a whole cannot be determined from the meanings of the individual words. As such, idioms pose a problem for the psychological process of interpretation, but psychologists have shown interpretation of idioms to be fast. A hallmark of idioms is their resistance to syntactic variation, and some idioms are more resistant than others. Idioms that are low in resistance are termedflexible, and they tend to be more familiar to users of the language, combinedr=.401, combinedp=.02. Some syntactic variations are moredisruptive than others are, and the disruptiveness of variations agrees well with a prediction by Fraser (1970), combinedr=.897,p<.01. Furthermore, 86% of the judgments of the acceptability of 41 idioms in 7 to 8 syntactic variations by 103 Harvard undergraduates agree with a strong proposal by Fraser (1970) that if a particular syntactic variation of an idiom is acceptable, then all relevant variations equally or more disruptive are also acceptable. The localization of the 14% disagreement in either competence or performance will have considerable implications for cognitive psychology and linguistics.This research was funded in part by a graduate student research fund provided by the Department of Psychology, Harvard University. The article is a short version of the author's doctoral thesis with the same title. I am sincerely grateful to Keith Holyoak, Donna Jo Napoli, Miriam Schustack, and Roger Brown for their advice on various stages of experimental design. I am also grateful to Roger Brown, Monica Harris, Robert C. Crowder, Peter C. Gordon, Eliott Mordkowitz, and Elizabeth Weiss for helpful comments on earlier drafts. Douwe Yntema, Robert Rosenthal, and Don Rubin graciously provided helpful suggestions on data analysis for which I am also grateful.     

Infants’ sensitivity to familiar size: The effect of memory on spatial perception

Two experiments investigated infants’ sensitivity to familiar size as information for the distances of objects with which they had had only brief experience. Each experiment had two phases: a familiarization phase and a test phase. During the familiarization phase, the infant played with a pair of different-sized objects for 10 min. During the test phase, a pair of objects, identical to those seen in the familiarization phase but now equal in size, were presented to the infant at a fixed distance under monocular or binocular viewing conditions. In the test phase of Experiment 1, 7-month-old infants viewing the objects monocularly showed a significant preference to reach for the object that resembled the smaller object in the familiarization phase. Seven-month-old infants in the binocular viewing condition reached equally to the two test phase objects. These results indicate that, in the monocular condition, the 7-month-olds used knowledge about the objects’ sizes, acquired during the familiarization phase, to perceive distance from the test objects’ visual angles, and that they reached preferentially for the apparently nearer object. The lack of a reaching preference in the binocular condition rules out interpretations of the results not based on the objects’ perceived distances. The results, therefore, indicate that 7-month-old infants can use memory to mediate spatial perception. The implications of this finding for the debate between direct and indirect theories of visual perception are discussed. In the test phase of Experiment 2,5-month-old infants viewing the objects monocularly showed no reaching preference. These infants, therefore, showed no evidence of sensitivity to familiar size as distance information.     

Beyond the distributional input? A developmental investigation of asymmetry in infants’ categorization of cats and dogs

Two experiments are reported using a visual familiarization categorization procedure. In both experiments, infants were familiarized with sets of stimuli previously shown to contain asymmetric feature distributions that support an asymmetry in young infants' categorization of cats and dogs (i.e. infants' cat category excludes dogs but their dog category includes cats). In Experiment 1, the asymmetry was replicated in 4-month-old infants. In contrast, 10-month-old infants demonstrated exclusive category representations for both cats and dogs. In Experiment 2, an additional group of 10-month-olds demonstrated exclusive representations for both cats and dogs under conditions of very limited within-task category familiarization. Potential mechanisms underlying the shift from an asymmetric to a symmetric pattern of categorization in the first year are discussed.