New Concepts for a New Age: Information Service Organizations and Mental Information Work

Abstract

To describe and conceptualize new forms of work and organization a questionnaire survey in service organizations (n = 845), and a telephone survey among workers (n = 1168) were held. New concepts are introduced to identify the types of work and organization found, i.e. “Information Service Organization” (ISO) and “Mental Information Work” (MIW). ISOs are characterized by activities such as collecting, storing, and processing data; advising people; and informing people. They also make a lot of use of IT (computers, programs) and electronic network connections. Most ISOs appear to be traditional in terms of working hours and places of work. MIW is a form of knowledge work characterized by mental manipulations of information; IT is often used. Flexi-time is relatively frequent in MIW, but most people work on a fixed place of work.     

Effects of motor congruence on visual working memory

Grounded-cognition theories suggest that memory shares processing resources with perception and action. The motor system could be used to help memorize visual objects. In two experiments, we tested the hypothesis that people use motor affordances to maintain object representations in working memory. Participants performed a working memory task on photographs of manipulable and nonmanipulable objects. The manipulable objects were objects that required either a precision grip (i.e., small items) or a power grip (i.e., large items) to use. A concurrent motor task that could be congruent or incongruent with the manipulable objects caused no difference in working memory performance relative to nonmanipulable objects. Moreover, the precision- or power-grip motor task did not affect memory performance on small and large items differently. These findings suggest that the motor system plays no part in visual working memory.     

Two flaws concerning belief accounts of implicit biases

The current scientific discourse offers two opposing viewpoints about the roots of implicit biases: are they belief states or subdoxastic attitudes? The goal of this paper is to show that belief accounts of implicit biases are (1) too demanding and (2) lack a satisfying reasoning theory. Firstly, I will outline the concept of attitude and its relation to implicit biases. Next, I will briefly outline Mandelbaum’s view, who gives a paradigmatic example of a belief account of implicit biases. Afterward, I will concern two flaws and discuss them in more detail. This shows that all current belief accounts of implicit biases do not emphasize these critical points enough, which makes them unsatisfying.     

Mood and the impact of individuating information on the evaluation of ingroup and outgroup members: The role of mood-based expectancies

This research investigates the role of mood-based expectancies regarding a target's group membership for the impact of individuating information on target judgments. We argue that target judgments in both positive and negative mood may be more or less affected by individuating information depending on whether the target is an ingroup member or an outgroup member. Specifically, in a competitive intergroup setting it should be less congruent with mood-based expectancies when individuals in positive (negative) mood learn that an outgroup (ingroup) member rather than an ingroup (outgroup) member has succeeded. Hence, unexpected (i.e., mood-incongruent) category information should elicit more attention than expected (mood-congruent) category information. More importantly, subsequent individuating information (high vs. low target competence) should be processed more effortful and influence target judgments more strongly given mood-incongruent (vs. mood-congruent) category membership. Findings of an experiment support these predictions. Results are discussed in regard to implications for different research domains.     

Human variable ratio performance

The generality of the mathematical principles of reinforcement (MPR) was tested with humans. In Experiment 1A, participants’ mouse clicks were reinforced according to a series of variable-ratio (VR) values. In one condition, a situated task was used (searching for treasure on a map presented via a PC monitor); in the other, abstract version of the task, participants clicked on a white screen. Under the “map” condition, response rates increased with increasing ratio value before decreasing with further ratio increases; under the “no-map” condition, response rates decreased linearly from a peak at the smallest ratio. In Experiment 1B, the pattern of responding was confirmed under the “map” conditions using a different set of ratio values. In Experiment 2, reinforcer magnitude was manipulated using the “map” context. Response rates did not differ significantly when large rather than small cash reinforcers were delivered according to a VR 30 but were significantly higher when large rather than small cash reinforcers were delivered according to a VR 120. Together these experiments offer qualified support for extending MPR to the behavior of human participants.     

Delay-dependent working memory impairment in young-adult and aged 5-HT1BKO mice as assessed in a radial-arm water maze

Serotonin (5-HT) plays a modulatory role in mnemonic functions, especially by interacting with the cholinergic system. The 5-HT1B receptor is a key target of this interaction. The 5-HT1B receptor knockout mice were found previously to exhibit a facilitation in hippocampal-dependent spatial reference memory learning. In the present study, we submitted mice to a delayed spatial working memory task, allowing the introduction of various delays between an exposure trial and a test trial. The 5-HT1BKO and wild-type mice learned the task in a radial-arm water maze (returning to the most recent presented arm containing the escape platform), and exhibited a high level of performance at delays of 0 and 5 min. However, at the delay of 60 min, only 5-HT1BKO mice exhibited an impairment. At a delay of 90 min, all mice were impaired. Treatment by scopolamine (0.8 mg/kg) induced the same pattern of performance in wild type as did the mutation for short (5 min, no impairment) and long (60 min, impairment) delays. The 22-month-old wild-type and knockout mice exhibited an impairment at short delays (5 and 15 min). The effect of the mutation affected both young-adult and aged mice at delays of 15, 30, and 60 min. Neurobiological data show that stimulation of the 5-HT1B receptor inhibits the release of acetylcholine in the hippocampus, but stimulates this in the frontal cortex. This dual function might, at least in part, explain the opposite effect of the mutation on reference memory (facilitation) and delay-dependent working memory (impairment). These results support the idea that cholinergic-serotonergic interactions play an important role in memory processes.     

The Structure of Attention-Deficit and Hyperactivity Symptoms Among Native and Non-Native Elementary School Children

This study evaluated the psychometric properties of a measure of Attention-Deficit/Hyperactivity Disorder (ADHD) with Native and non-Native children. Two models, corresponding to DSM-III-R and DSM-IV symptom categorizations of ADHD, were assessed by (a) determining which DSM schema of ADHD best fit the data within each culture group and (b) testing the cross-cultural equivalence of the best-fitting model. Data were taken from the Flower of Two Soils and School Options for Native Children studies, examinations of emotional health and academic achievement among Native and non-Native children. The studies included teacher, parent, and self-report ratings of symptoms among 1555 Native and 489 non-Native children in grades 2 and 4 at four different locations across North America. For the data derived from teacher and parent ratings, a 2-factor solution corresponding to the DSM-IV conceptualization of two subtypes provided the best fit. For student self-ratings, the 2-factor solution showed no improvement over a 1-factor model. The respective factor solutions were culturally invariant. Acceptable internal consistency was observed across raters and within culture groups.