Procedural dependence in action memory: Effects of verb form and individual vs group conditions

Two experiments explored whether the magnitude of the enactment effect in action memory (i. e., higher recall with motor than with non-motor encoding) may depend upon the use of individual or group testing procedures. Nonmotor encoding instructions, requiring the subjects to listen to orally presented action items, were compared to instructions which also required enactment. With encoding treated as a within-subject factor, the observations failed to reveal any significant difference between individual and group testing. With encoding treated as a between-subject factor, the results showed an interaction between test and encoding conditions, such that an enactment effect was found only with group testing. Different support value for auditory cues in group and individual test situations was assumed to account for this difference. In a third experiment the indicative and imperative verb forms were compared. An interaction was observed, showing that in Norwegian, enacted verbs were remembered better when presented in the indicative than in the imperative. No corresponding difference was found under non-enactment conditions. For this finding, a social interaction interpretation was offered.     

Toward a psychological cost-benefit model for educational and vocational choice

The usefulness of cost-benefit models for analyzing the individual's educational and occupational choice is discussed, with the choice after high school graduation as an example. As a background, the economic approach linked to the human capital concept is described as well as the use of cost-benefit analysis within this framework. Cost-benefit analysis is then discussed as a possible model within the area of educational and occupational choice. First, the traditional, strictly economic model is analyzed and criticized. A psychological economic alternative is proposed which, in contrast to the economic model, is based on the individual's perceptions and expectations regarding costs and benefits. As a third step, a purely psychological cost-benefit model is suggested, where the cost and benefit concepts are broadened to include all types of personal sacrifices and rewards. This model is regarded as more realistic for the individual's career choice than the economic prototypes.     

Sex-related differences in socio-political ideology

The study was directed towards uncovering differences in socio-political ideology between males and females. The subjects consisted of 532 Swedish high school students from metropolitan Stockholm. All subjects were from the same grade and of approximately the same age (18 years). The results failed to disclose any significant differences in the political party preference of males and females. However, there were a number of statistically significant differences in the socio-political attitudes of males and females as measured by the S5 Conservatism Scale. Females were found to be less generally conservative, less racist, pro-western, punitive and more religious and egalitarian than males. Despite certain ideological differences between males and females, the socio-political attitude profiles and the attitude structures, as measured by profile and factor analyses, were quite similar for males and females. The results are discussed in terms of four schools of thought concerning the sources of sex-related differences in political style.     

The invariance of asymmetric cross-modal transfer effects

Cross-modal transfer as a function of the amount of first modality training was investigated in two experiments. Subjects learned to associate numbers with three-dimensional objects which were presented either visually or tactually. After training in one of the modalities, the transfer was tested in the other modality. In the first experiment the transfer was tested after different number of trials of training and in the second experiment it was tested after different levels of overlearning. Transfer in the tactual-visual order was superior to transfer in the visual-tactual order in all training conditions, and the magnitude of the effect was the same. The results suggest that learning factors such as amount of training are of minor importance as causes to the asymmetry between these modalities and that it may be more fruitful to concentrate on perceptual factors.     

彩色多普勒超声在人工动静脉内瘘并发症中的临床决策评价

由于血液透析的广泛应用,尿毒症患者的生存时间显著延长. 建立并保持良好的血管通路是长期慢性血液透析的前提条件.彩色多普勒超声作为一种无创性检查方法,在人工动静脉内瘘血管通路的监测中发挥着重要的临床价值.本文评估彩色多普勒超声在人工动静脉内瘘并发症临床决策中的重要作用.     

Net Amount of Food Affects Autoshaped Response Rate, Response Latency, and Gape Amplitude in Pigeons

The contribution of net amount of food to conditioned response strength and topography was assessed in four pigeons under autoshaping contingencies. In each session, under one baseline phase and three replication phases, three trial types were presented sequentially: One conditioned stimulus (keylight) signaled one small pellet, another signaled one large pellet, and a third signaled seven small pellets which were weight-matched to one large pellet. Five dependent variables were response rates and latencies based on the occurrence of both keyswitch closures and gapes (beak openings) and gape amplitudes. In result, net amount of food, not pellet diameter or number, affected all dependent variables. Notably, gape amplitudes elicited by the seven-small pellet keylights were larger than the gape amplutides elicited by the one-small pellet keylights even though the gape amplitudes elicited by both unconditioned stimuli (one or seven pellets) were equally small. This mismatch between conditioned and unconditioned responses is incompatible with stimulus substitution accounts but is compatible with an associative strength account. Furthermore, the changes in the dependent variables were most likely determined by Pavlovian and not by inadvertent operant contingencies. The findings demonstrate that an analysis of classical conditioning benefits from the inclusion of topographical measures.     

Measures of attitudinal polarization

Abstract.— Criteria for measures of attitudinal polarization, i. e., degree of opposition among people on a specific issue, are proposed and some formulas, including the standard deviation, are evaluated in relation to the criteria. The formulas were also tested on empirical data with respect to level, dispersion and agreement of received values. The measures on the whole showed a high degree of agreement. There clearly exist instances where the standard deviation is not an adequate measure of attitudinal polarization. Some guidelines are given for the choice of constant values in one of the formulas.     

The multidimensionality of state and trait anxiety

Abstract.— The two major problems investigated were ( a ) the multidimensionality of trait (A-Trait) and state (A-State) anxiety, and ( b ) the relationship between A-Trait and A-State under neutral conditions, using two measures of A-Trait (SR-GTA and STAI-T) and two measures of A-State (BRQ and STAI-S). These scales were administered to a sample of Swedish university students (54 males and 105 females). Factor analyses of the GTA situational scales yielded an interpersonal ego threat A-Trait factor and a physical danger A-Trait factor. Factor analyses of the GTA reaction scales and STAI-T reaction scales yielded, respectively, two and three factors providing evidence for the multidimensionality of A-Trait. Results of variance components analyses of the GTA scales provided further evidence for the multidimensionality of A-Trait. Factor analyses of the BRQand STAI-S measures yielded four and three factors, respectively, indicating the multidimensionality of A-State. The correlations between trait and state measures were higher than the correlations between the two state measures, and a factor analysis of the trait and state scales did not yield separate state and trait factors, questioning the proposition that A-Trait and A-State are distinct concepts. Via latent profile analysis, it was possible to compare A-State differences for different A-Trait profiles. Problems for further research were discussed.