The Role of Information Reduction in Skill Acquisition

Theories of skill acquisition assume that the effects of practice on task performance are due to either qualitative changes in the task structure, an increased efficiency of performing individual task components, an increased efficiency of performing sequences of task components, or some combination of these mechanisms. We propose an extension to the existing theories by arguing that for many tasks, practice affects which information is processed. More specifically, we argue that people learn, over the course of practice, to separate task-relevant from task-redundant information, and to limit their processing to relevant aspects of the task. In three experiments, subjects verified alphabetic strings, such as M [4] R S T. Strings were correct if they followed the alphabet when the number of letters, given by the digit in parentheses, was skipped. Strings were constructed such that errors occurred only within the initial “letter–digit–letter” triplet. Analyses of subjects’ RTs for strings of varying lengths demonstrated that: (a) subjects were able to distinguish relevant from redundant task information, and to limit their processing to the relevant information, (b) the ability to reduce the amount of information that is processed takes time and develops gradually over the course of practice, and (c) the mechanism underlying this ability appears to be largely stimulus-independent in the sense that structural components of a task are ignored, rather than specific task information. The findings and their implications for general theories of skill acquisition are discussed.     

Cultural Values as Moderators of Employee Reactions to Job Insecurity: The Role of Individualism and Collectivism

Cette recherche part de l’hypothèse que les valeurs culturelles sont l’un des déterminants des réactions des salariés face à l’insécurité professionnelle. Dans la première investigation, les valeurs culturelles ont été appréhendées au niveau de l’individu à partir des réponses de 141 salariés de diverses origines ethniques appartenant à une grande entreprise agro‐alimentaire américaine qui réduisait ses effectifs. Les répondants ont rempli des questionnaires évaluant leurs valeurs culturelles, leur perception de la sécurité au travail, leurs attitudes professionnelles, leurs réactions affectives vis‐à‐vis de la réduction des effectifs et leur niveau de stress lié au travail. Les résultats ont montré que le sentiment d’insécurité professionnelle avait un impact généralement négatif sur les employés. Toutefois, les salariés présentant des valeurs culturelles communautaires ressentaient plus négativement que leurs homologues individualistes le sentiment d’insécurité professionnelle. Dans le second volet de la recherche, la culture a été définie au niveau national. On a proposé aux salariés de sept organisations, quatre chinoises et trois américaines, de remplir des questionnaires appréciant leurs réactions à leur perception de l’insécurité professionnelle. Il apparut que les Chinois (mentalité communautaire) réagissaient plus négativement que les Américains individualistes face à la menace constituée par l’insécurité professionnelle. Les résultats sont analysés à la lumière du développement de pratiques organisationnelles qui comprennent la réduction des effectifs et autres procédures qui impliquent une moindre stabilité des emplois. This research explored the hypothesis that cultural values moderate employee reactions to job insecurity. In the first study, cultural values were measured at an individual level of analysis based on responses from one hundred and forty‐one ethnically diverse employees of a large US‐based food‐processing company undergoing a downsizing. Participants completed surveys assessing their cultural values, perceptions of job security, job attitudes, affective reactions to the downsizing, and job‐related stress levels. Results indicated that the perception of job insecurity had a generally negative impact on employees. However, employees with collectivist cultural values were more negatively affected by the perception of job insecurity than their individualist counterparts. In the second study, culture was operationalised at the national level of analysis. Employees from seven organisations (four based in China; three based in the US) completed surveys assessing their reactions to perceived job insecurity. Results suggest that Chinese (i.e. collectivist) employees reacted more negatively to the threat of job insecurity than their US counterparts (i.e. individualist employees). These results are discussed in light of growing organisational trends that include the use of downsizing and other techniques that herald a decrease in job stability.     

A Swiss–US Comparison of the Correlates of Job Insecurity

Much is known about the general correlates of job insecurity but less about whether the strength of these correlations differs between countries. In order to fill this gap in the literature, the current study explored the correlates of job insecurity as a function of the cultural value of uncertainty avoidance. Specifically, using two samples from countries with very different uncertainty avoidance orientations (Switzerland and the US), we tested whether the relationships of job insecurity with job satisfaction, organisational commitment, and turnover intention are stronger in the Swiss sample. As expected, Swiss respondents scored higher in uncertainty avoidance than their US counterparts. Contrary to expectations, however, the results showed that the relationships between job insecurity and outcomes were stronger in the US than in Switzerland. Substantial differences in the social safety net within the two countries are discussed as a plausible explanation of this finding.     

Personality dimensions and emotional problems: The mediating role of irrational beliefs in Pakistani adult non‐clinical sample

This study presents the first examination of the relation between the Big Five personality traits, irrational beliefs and emotional problems in Pakistan, which is an understudied country in the psychological distress literature. A total of 195 participants (aged 25–60 years), employees at COMSATS University, completed a demographic information sheet, the Big Five Personality Questionnaire, the Irrational Belief Inventory and two subscales of the Brief Symptom Inventory including depression and anxiety. Direct effects of neuroticism, openness and conscientiousness were also observed for depression and anxiety. Structural Equation Modelling demonstrated that irrational beliefs played a significant mediating role in the relationship between neuroticism and anxiety and neuroticism and depression. The results highlight the importance of cognitive beliefs in functionally linking personality traits and emotional problems.     

The relevance of the nature of learned associations for the differentiation of human memory systems

In a previous functional magnetic resonance imaging (fMRI) study we demonstrated an involvement of the medial temporal lobe (MTL) during an implicit learning task. We concluded that the MTL was engaged because of the complex contingencies that were implicitly learned. In addition, the basal ganglia demonstrated effects of a paralleled proceduralization of fixed stimulus-response associations. In the present study we directly tested the hypothesis that the MTL activation depends upon implementing the complex regularity in task material, whereas activation of basal ganglia does not. Therefore, we rearranged task material such that it did not contain any complex regularity. The statistical comparison of behavioral and fMRI data between the materials allowed for isolating effects that were directly related to the implicit learning process regarding the complex regularity. The results showed a reliable difference of fMRI signal limited to the MTL, indicating a specific functional role of the MTL in implicit learning of complex contingencies. Furthermore, no difference of BOLD (Blood-Oxygenation Level Dependent) signal in the basal ganglia and cerebellum were detected, supporting the assumption of a functional involvement of the structures in proceduralization of simple stimulus-response associations but not in implicitly learning complex relations. We therefore conclude that the nature of the learned associations is relevant for determining the neuronal focus of learning, rather than the accompanying awareness.     

The role of task rules and stimulus–response mappings in the task switching paradigm

Switch costs occur whenever participants are asked to switch between two or more task sets. In a typical task switching experiment, participants have to switch between two task sets composed of up to four different stimuli per task set. These 2 (task sets) x 4 (stimuli) contain only 8 different stimulus-response (S-R) mappings, and the question is why participants base their task performance on task sets instead of S-R mappings. The current experiments compared task performance based on task rules with performance based on single stimulus-response mappings. Participants were led to learn eight different S-R mappings with or without fore-knowledge about two underlying task sets. Without task set information no difference between shifts and repetitions occurred, whereas introducing task sets at the beginning led to significant switch costs. Most importantly, introducing task sets in the middle of the experiment also resulted in significant switch costs. Furthermore, introducing task rules at the beginning of the experiment lead to slower RTs when simple stimuli (Experiment 1) had to be processed. This detrimental effect disappeared with more complex stimuli (Experiment 2). Results will be discussed with respect to cognitive control.     

Conflicts between expected and actually performed behavior lead to verbal report of incidentally acquired sequential knowledge

According to the Unexpected-Event Hypothesis (UEH) (Frensch, Haider, Rünger, Neugebauer, Voigt & Werg, 2002), conflicts between expected and actually performed behaviors trigger attribution processes and ultimately lead to the ability to verbally report an incidentally experienced sequential regularity. In two experiments, we manipulated the likelihood that a specific conflict, a premature response, occurred in a sequential version of the Number Reduction Task (NRT). Experiment 1 demonstrated that a longer RSI leads to a larger number of premature responses and to more verbal report than a shorter RSI. However, this effect of the RSI on verbal report was removed when participants were discouraged from emitting premature responses. Experiment 2 revealed that artificially inducing premature responses leads to an increase in verbal report, but only when premature responses are introduced late in training. Overall, the findings strongly support the assumptions of the UEH.     

Challenged Expectations: Mere Exposure Effects on Attitudes About Transgender People and Rights

Social categorization processes may be initiated by physical appearance, which have the potential to influence how people evaluate others. Categorizations ground what stereotypes and prejudices, if any, become activated. Gender is one of the first features people notice about others. Much less is known about individuals who may transgress gender expectations, including people who are transgender. Using an experiment, this study investigates whether the attitudes that people have about transgender people and rights are influenced by information and facial images. We hypothesize that mere exposure to transgender people, via information and images of faces, should be a source of prejudice reduction. We randomly provide participants with vignettes defining transgender and also randomize whether these vignettes come with facial images, varying the physical features of gendered individuals. We find our treatments have lower levels of discomfort and transphobia but have little effect on transgender rights attitudes. We further find that the impacts are stronger among Democrats than among Republicans. Our findings support the argument that people are in general unfamiliar with transgender people, and the mere exposure to outgroups can be a source of prejudice reduction.     

Spiritual Transcendence and Psychological Adjustment: The Moderating Role of Personality in Burn Patients

The current study examined the moderating role of personality traits (neuroticism and extraversion) on the relationship between spiritual transcendence and positive change, and spiritual transcendence and distress in burn patients. The sample (N = 98) comprised adult burn patients (age = 25–50) admitted to three hospitals in Lahore, Pakistan. They were assessed according to a demographic information sheet, the NEO Personality Inventory (McCrae and Costa in J Personal Soc Psychol 52:81–90, 1987), the Spiritual Transcendence Index (Seidlitz et al. in J Sci Study Relig 41:439–453, 2002), the Depression, Anxiety, Stress Scales-21 (Lovibond and Lovibond in Manual for the Depression Anxiety Stress scales, Psychology Foundation, Sydney, 1995), and the Perceived Benefit Scales (McMillen and Fisher in Soc Work Res 22(3):173–186, 1998). Stepwise moderated regression analysis showed that both personality traits (neuroticism and extraversion) played a moderating role in the relationship between spiritual transcendence and positive change, and spiritual transcendence and distress in burn patients. The findings highlight the potential role spiritual transcendence may have in understanding and improving the psychological adjustment of burn patients.     

Impact of Immigration on Economic Growth in Canada and in its Smaller Provinces

This paper evaluates the potential impact of education levels of immigrants and Canadian-born on economic growth in Canada and its smaller provinces by using data for the period 2006–2013. We specify a production function in which levels of educational attainments of immigrants and Canadian-born workers are entered separately. Feasible generalized least square (FGLS) method is applied to estimate the production function separately for all immigrants, and also for established immigrants (those who have been in Canada for 10 years or longer). The results show that all educational levels of immigrants have positive and statistically significant effects on economic growth. A similar conclusion applies to Canadian-born workers, although the impacts of their university degree holders is lower than that of immigrant university degree holders. Both immigrant and Canadian-born workers have smaller effects on economic growth in smaller provinces, which have attracted larger numbers of immigrants in recent years. The results also show that the economic growth effects are similar for all and established immigrants. Although these results are consistent with previous findings on discounting of immigrants’ educational credentials, more data are needed to strengthen their validity. We also suggest that the higher economic growth impact of immigrant university degree holders than that of Canadian-born is indicative of greater social returns to higher education resulting from increased diversity of population which in turn, as some previous studies suggest, can result in increased technological innovation, new ideas, and production of a wide variety of goods and services.