Measuring Executive Function Deficits Following Head Injury: An Application of SMS Simulation Technology

The Psychological Record - Neuropsychological tests have limited sensitivity in identifying subtle residual cognitive impairments in patients with good medical recovery from head injury and...     

Die Organisation der sowjetischen Philosophie der Physik seit Dezember 1960

Ohne Zusammenfassung     

Estimating, testing, and comparing specific effects in structural equation models: the phantom model approach

The phantom model approach for estimating, testing, and comparing specific effects within structural equation models (SEMs) is presented. The rationale underlying this novel method consists in representing the specific effect to be assessed as a total effect within a separate latent variable model, the phantom model that is added to the main model. The following favorable features characterize the method: (a) It enables the estimation, testing, and comparison of arbitrary specific effects for recursive and nonrecursive models with latent and manifest variables; (b) it enables the bootstrapping of confidence intervals; and (c) it can be applied with all standard SEM programs permitting latent variables, the specification of equality constraints, and the bootstrapping of total effects. These features along with the fact that no manipulation of matrices and formulas is required make the approach particularly suitable for applied researchers. The method is illustrated by means of 3 examples with real data sets.     

Are prosocials unique in their egalitarianism? The pursuit of equality in outcomes among individualists

The present research aims to elucidate to what extent the motive to ensure equality in outcomes is general and to what extent it interacts with other important motives such as maximizing own or collective gains. Because individuals may have different considerations and motivations in decision-making situations, it is likely that people with a different social value orientation will respond differently to an unequal distribution of outcomes. Contrary to expectations, not only prosocials care about equality in outcomes. In Study 1, the authors found that individualists choose to forego personal gains, despite obvious selfish reasons to cooperate, when outcomes were distributed unequally. In a second experiment, this finding was replicated and shows that individualists, just as prosocials, demand equality in outcomes in interdependent situations. The studies suggest that typifying individualists as solely being concerned about enhancing personal outcomes is too limited and that fairness norms may trump social value orientation.     

Libido und psychische Energie

The authors investigate different definitions of “psychic energy” and “libido” as well as their critique. With regard to “psychic energy” it is shown that the critique relates in particular to the perspective of Brenner and others and not to Freud's definition. They argue that Freud uses the term “psychic energy” as a synonym for “libido” and not “libido” as a synonym for “psychic energy”. It is assumed that until 1914, Freud related “libido” to manifestations of bodily sexual tensions and afterwards to manifestations of sexual energy in the psychic field. The authors reject this change for epistemological reasons as well as Freud's attempt to use dynamic, economic considerations as an explanatory device. Freud's energy concept is inconsistent with the definition of energy in natural sciences, and, whereas the meta-psychological topographical, dynamic and structural viewpoints have a solid foundation in the representational world to which the psychoanalytic process affords unique access, this is not true of the economic viewpoint. It is claimed that bodily tensions exist in the representational world only in the form of affects, so that the economic viewpoint should, in the authors' opinion, be abandoned in favour of an affective one. In the context of the endeavour to obtain pleasure and avoid unpleasure as adduced by Freud, this viewpoint concentrates on the relationships between affects and the different elements of the representational world, thereby serving as the topoi of meta-psychological investigation dimensions.     

Place avoidance learning and stress-induced analgesia in the attacked mouse: role of endogenous opioids

In this study, mechanisms of pain inhibition (tail-flick test) and memory (place avoidance paradigm) were investigated in attacked, DBA/2 and C57BL/6, mice. During training, exposure of test animals to 10 or 30 bites by an aggressive, isolated ICR mouse situated in the dark half of a bright/dark conditioning box induced a significantly higher social conflict analgesia in DBA than in C57 mice. Naltrexone (0.5 and 2.0 mg/kg) reduced this response in DBA mice that received 30, but not 10, bites and was ineffective in C57 mice. This points to different, opioid versus naltrexone-insensitive nonopioid, analgesic mechanisms. During place choice testing in the same box 24 h later, DBA mice that had received 30, but not 10, bites showed a significant, naltrexone-reversible, avoidance of the attack place. No place avoidance learning was observed in C57 mice. The data provided unequivocal evidence that place avoidance learning was a result of associative conditioning, in that neither pairing nor social conflict per se significantly changed the preference for the dark side seen in experimentally naive DBA mice. Antagonism of place avoidance conditioning was observed regardless of whether testing was carried out in the drugged or undrugged state, excluding possible state-dependent effects as an explanation for the naltrexone-induced impairment. Individual correlational analysis in saline-injected, attacked DBA mice revealed a negative relationship between the analgesic state immediately after training and the avoidance of attack place during testing. In summary, the results suggest strain-dependent analgesic and learning mechanisms and indicate that endogenous opioids released in attacked DBA mice support pain inhibition and modulate the memorization of attack place by their analgesic effects, as well as by mechanisms independent of pain inhibitory systems.     

Misattributions in attribution research: Choices of scientific certainty vs. understanding of reality: A rejoinder

Fincham (1984) has argued that Nogami and Streufert (1983) advanced a thesis which (1) attempts to empirically demonstrate that attributions for an accident are lower with severe as opposed to less severe outcomes and (2) applies these data to account for previous contradictory findings of the ‘defensive attribution’ literature. The present authors show that Fincham's attribution of intent to Nogami and Streufert is in error and that the divergent views of Nogami and Streufert versus those of Fincham and associates reflect legitimate but different approaches toward the problem of attribution theory and research.