Toddlers’ cognition of adding and subtracting objects in action and in perception

A first experiment tested infants’ perceptual discrimination between correct and incorrect adding and subtracting objects with a standardized violation-of-expectation procedure. Eleven-, 16- and 21-month-olds did not look longer at incorrect (one object) than at correct (two objects) results of adding one object to another, nor at incorrect (two objects) than at correct (one object) results of subtracting one object from two. A second experiment tested 21-month-olds’ sensorimotor production of addition and subtraction results using a search-for-objects procedure. They already searched correctly for two objects when one object is added to another and for one object when one is subtracted from two objects. These findings support the constructivist hypothesis that infants’ active sensorimotor production may develop before their reactive perceptual discrimination of adding and subtracting objects.     

Effect of power to harm on retaliative aggression among males and females

The present studies examined the effect of differential power to cause harm to one another on individuals' retaliative responding. Participants with less, equal, or greater power relative to their target set shocks for one another in the context of a reaction-time task. Those in the less power condition consistently set higher shocks for their targets than did participants in greater or equal power conditions. Female participants were less likely than males to use an extreme violent response. The effects of power were seen most clearly when the target was male. Results are discussed in terms of equity considerations in human aggressive interactions.     

An extension of the ‘two-baskets’ theory to Native Americans

A theory that private and collective self-cognitions are stored in separate locations in memory (Trafimow, Triandis, & Goto, 1991; Trafimow, Silverman, Fan, & Law, 1997) was tested with a sample of participants (Native Americans) that differed substantially from those in previous research. Two findings supported the theory. First, participants retrieved more private self-cognitions when the private self rather than the collective self was primed; but retrieved more collective self-cognitions when the collective self rather than the private self was primed. Second, people were more likely to retrieve a private self-cognition following another private self-cognition than following a collective one, but were more likely to retrieve a collective self-cognition following another collective one than following a private one. Copyright © 1998 John Wiley & Sons, Ltd.     

Perceived causality and perceived force: Same or different?

Visually perceived interactions between objects, such as animated versions of billiard ball collisions, give rise to causal impressions, impressions that one object produces some effect in another, and force impressions, impressions that one object exerts a certain amount of force on another. In four experiments, evidence for strong divergence between these two impressions is reported. Manipulations of relative direction of motion and point of contact between the objects had different effects on the causal and force impressions (Experiment 1); delay between one object contacting another and the latter starting to move had a stronger effect on the causal impression than on the force impression (Experiment 2); a context of other moving objects significantly weakened the causal impression but not the force impression (Experiment 3); and there was an inverse relation between an impression of one object penetrating another and the amount of force the former was perceived as exerting on the latter (Experiment 4). These findings are explained in terms of differential effects of instructions on attention, and also in terms of differences in meaning between force and causality.     

A system for programming experiments and for recording and analyzing data automatically

A system designed for use in complex operant conditioning experiments is described. Some of its key features are: (a) plugboards that permit the experimenter to change either from one program to another or from one analysis to another in less than a minute, (b) time-sharing of permanently-wired, electronic logic components, (c) recordings suitable for automatic analyses. Included are flow diagrams of the system and sample logic diagrams for programming experiments and for analyzing data.     

Genetics and intelligence: Recent data

During the last three years, cognitive data have been reported for 4,639 pairings using the family design, 2,540 pairings using the adoption design, and 2,164 pairs of twins. Together, these extensive data point to less heritable influence on IQ than is indicated by the widely cited older data. The difference between the newer and older data could be due to environmental or genetic secular changes in the population or to methodological differences. Contrary to usual assumptions, the newer data also suggest that more of the environmental influences for parents and offspring and for older siblings operate within families (making family members different from one another) than between families (making family members similar to one another).     

Multiphase mixed-effects models for repeated measures data

Behavior that develops in phases may exhibit distinctively different rates of change in one time period than in others. In this article, a mixed-effects model for a response that displays identifiable regimes is reviewed. An interesting component of the model is the change point. In substantive terms, the change point is the time when development switches from one phase to another. In a mixed-effects model, the change point can be a random coefficient. This possibility allows individuals to make the transition from one phase to another at different ages or after different lengths of time in treatment. Two examples are reviewed in detail, both of which can be estimated with software that is widely available.     

Illumination change at a depth edge can reduce lightness constancy

Lightness constancy requires that a surface retain its lightness not only when the illumination is changed but also when the surface is moved from one background to another. Occlusion of one surface by another frequently results in a retinal juxtaposition of patches under different illuminations. At such edges, retinal luminance ratios can be much higher than in scenes with a single illumination. We demonstrate that such retinal adjacencies can produce failures of lightness constancy. We argue that they are responsible for departures from perfect lightness constancy in two prior experiments that examined the effects of depth relations on lightness constancy.     

A fixed-population problem for the person-affecting restriction

Philosophical Studies - According to the person-affecting restriction, one distribution of welfare can be better than another only if there is someone for whom it is better. Extant problems for the...     

Simple kinetic information for transparent depth

The present paper reports three investigations of new kinetic information for transparent depth using computer-generated dot patterns. An initial demonstration showed that separation in depth could be obtained by translating rectangular lattices of dots through one another like intersecting columns of marching soldiers. The first two experiments showed that diagonal interactions between lattices created significantly stronger separation than did horizontal or vertical interactions (horizontal was, in turn, stronger than vertical) and that patterns which translated through one another without any of the individual elements intersecting were better separated than those whose rows or columns intersected in register. The third experiment showed that random patterns interacting in any direction created the strongest separations of all the patterns observed. Results were taken to indicate that a unified theory of depth information, developed in the context of James Gibson’s ecological optics, must incorporate both spatial and kinetic structure in its specification of necessary and sufficient stimulus conditions.     

Audiovisual bounce-inducing effect: When sound congruence affects grouping in vision

Two disks moving from opposite points in space, overlapping, and stopping at one another’s starting point can be seen as either bouncing off one another or streaming through one another. With silent displays, observers report streaming, whereas, if a sound is played when the disks are in the overlap region, observers report bouncing. The change in perception is thought to be modulated by a lack of attention that inhibits the integration of the motion signal when disks overlap and by the sound that increases the congruence of the display, in comparison with a real elastic bounce. Here, we accompanied the disks’ motion with either a bounce-congruent sound (a billiard ball) or with bounce-incongruent sounds (a water drop, a firework). When the sound was switched on 200 msec before the disks’ overlap, (1) all the audiovisual displays induced more bounce responses than did the silent display, but (2) the bounce-congruent sound induced more bounce responses than did the bounceincongruent sounds. However, when the sound was switched on at the disks’ overlap, only the first result was observed. These results highlight both the role of attention and that of sound congruence.     

Being In Front Is Good—But Where Is In Front? Preferences for Spatial Referencing Affect Evaluation

Speakers of English frequently associate location in space with valence, as in moving up and down the “social ladder.” If such an association also holds for the sagittal axis, an object “in front of” another object would be evaluated more positively than the one “behind.” Yet how people conceptualize relative locations depends on which frame of reference (FoR) they adopt—and hence on cross-linguistically diverging preferences. What is conceptualized as “in front” in one variant of the relative FoR (e.g., translation) is “behind” under another variant (reflection), and vice versa. Do such diverging conceptualizations of an object's location also lead to diverging evaluations? In two studies employing an implicit association test, we demonstrate, first, that speakers of German, Chinese, and Japanese indeed evaluate the object “in front of” another object more positively than the one “behind.” Second, and crucially, the reversal of which object is conceptualized as “in front” involves a corresponding reversal of valence, suggesting an impact of linguistically imparted FoR preferences on evaluative processes.     

Growth and social behavior of previously undernourished mice

Developing mice were growth-retarded by underfeeding of their mothers during lactation. Control mothers were well nourished throughout. All offspring were fed ad libitum from weaning till their behaviour was tested in adulthood. The undernourished mice had weight deficits at weaning of 49% compared with controls. Nevertheless, they showed partial catch-up growth thereafter, in that their absolute weight deficits decreased between weaning and adulthood. Social behaviour observations were made on pairs of mice of the same treatment group. Previously undernourished mice were slower to start attacking one another, spent more time near or in contact with one another and did less tail-rattling than their controls.     

Shared learning shapes human performance: Transfer effects in task sharing

We investigated whether performing a task with a co-actor shapes the way a subsequent task is performed. In four experiments participants were administered a Simon task after practicing a spatial compatibility task with an incompatible S-R mapping. In Experiment 1 they performed both tasks alongside another person; in Experiment 2 they performed the spatial compatibility task alone, responding to only one stimulus position, and the Simon task with another person; in Experiment 3, they performed the spatial compatibility task with another person and the Simon task alone; finally, in Experiment 4, they performed the spatial compatibility task alone and the Simon task with another person. The incompatible practice eliminated the Simon effect in Experiments 1 and 4. These results indicate that when a task is distributed between two participants with each one performing a different part of it, they tend to represent the whole task rather than their own part of it. This experience can influence the way a subsequent task is performed, as long as this latter occurs in a social context.     

心理控制源倾向对责备与辩解的影响:进一步的证据

本研究是对Wang和Anderson研究的继续。149名大学生被试分别对成功和失败情境下的辩解以及交互负有责任情境下的责备进行了评定。结果表明,外控者与内控者相比有着较高的辩解倾向,而丑这一结果不受辩解情境(成功或失败)以及辩解对象(自己或别人)的影响。同时,在交互负有责任的情境下,外控者与内控者相比有较高责备别人的倾向,而对自己以及环境因素的责备则没有表现出差异。文中从方法学及心理动力学角度对这一结果进行了讨论。     

Positive illusions in marital relationships: a 13-year longitudinal study

This study examined the long-term consequences of idealization in marriage, using both daily diary and questionnaire data collected from a sample of 168 newlywed couples who participated in a 4-wave, 13-year longitudinal study of marriage. Idealization was operationalized as the tendency for people to perceive their partner as more agreeable than would be expected based on their reports of their partner's agreeable and disagreeable behaviors. Spouses who idealized one another were more in love with each other as newlyweds. Longitudinal analyses suggested that spouses were less likely to suffer declines in love when they idealized one another as newlyweds. Newlywed levels of idealization did not predict divorce.     

The Effects of Stress and Gender on Nonverbal Decoding Accuracy in Kinesic and Vocalic Channels

Stress has the potential to impair accurate decoding of others’ communication. This experiment tested the effects of stress, induced through the Stroop Color-Word Test, on the accurate decoding of kinesic and vocalic emotional expressions. Respondents (N =372) viewed or heard 30 emotional expressions interspersed with multichannel color stimuli that were redundant with one another (low stress) or conflicted with one another (high stress). Analyses of accuracy scores across three trials supported three of four hypotheses. Stress debilitated accuracy primarily in the vocalic channel and at the onset of stress. The kinesic facial channel also produced consistently higher accuracy than the vocalic channel, and females achieved higher accuracy than males, but this superiority dissipated by the third trial.     

解读成语中的他人心理与互动心理：来自眼动和ERP的证据

为了探查理解单个他人心理与解读互动心理的差异机制, 在实验一和实验二中分别采用眼动和事件相关电位技术来测评个体解读中文四字成语中的单个他人心理和互动心理的加工过程。眼动实验发现, 单人成语第二个字的总阅读时间显著长于物理成语; 随后, 互动成语前三字的凝视时间显著长于单人和物理成语。脑电实验发现, 在成语呈现后500~700ms, 解读单人和互动成语诱发的额区晚期正成分(LPC)平均波幅显著大于解读物理成语; 之后在700~800ms, 解读互动成语诱发的额中区LPC平均波幅显著大于解读单人和物理成语。眼动注视模式和脑电证据共同印证了理解单个他人的心理与理解多人的互动心理存在时间和强度上的差异。相对于物理表征和单人心理的加工, 理解更为复杂的互动心理需要更长的加工时间和更强的神经活动。     

Collective interviewing: A transactive memory approach towards identifying signs of truthfulness

Group interviewing has been neglected in the deception literature, yet it coincides with recent collective memory research. The present experiment applied the transactive memory theory to a collective interviewing situation and explored whether signs of truthfulness emerged through measuring joint memory recall. Truth-tellers were real couples who had been in a relationship for at least one year and cohabiting. Lying pairs were friends who pretended to be in a relationship for at least one year and cohabiting. All couples were interviewed in their pairs about their ‘real’ or ‘fictitious’ relationships. It was found that truth-telling pairs posed questions to one another, provided cues to one another, handed over remembering responsibility, and finished each others’ sentences significantly more than lying pairs, supporting the idea that real couples have a transactive memory system, unlike pretending couples. Implications for a collective interview approach that considers memory within deception detection are discussed.