In studies of eating behavior that have been conducted in humans, the tendency to consume more when given larger portions of food, known as the portion size effect (PSE), is one of the most robust and widely replicated findings. Despite this, the mechanisms that underpin it are still unknown. In particular, it is unclear whether the PSE arises from higher-order social and cognitive processes that ...

Background: The literature on the effects of nocebo on pain is sparse. The present experimental study investigated whether suggestions of nocebo hyperalgesia modified the startle response and whether increased startle contributed to the nocebo hyperalgesic effect. Methods: A design with four groups was employed; the participants were randomized into either a placebo group, a natural history group, ...

We examined both direct and indirect effects of the Healthy Body Image (HBI) intervention on positive embodiment among Norwegian high school students. In total, 2446 12th grade boys (43 %) and girls (mean age 16.8 years) from 30 schools participated in a cluster-randomized controlled study with the HBI intervention and a control condition as the study arms. We tested mediation models using path ...

The association between an action and its sensory consequence has been linked to our sense of agency (SoA). While ecological validity is crucial in investigating such a complex phenomenon, previous paradigms focusing on the cortical analysis of movement-related images used simplified experimental protocols. Here, we examined the influence of action-associated predictive processes on visual event-related ...

<i>Background and Objectives</i>: Performance on cognitive tasks is often impaired in individuals with schizophrenia (SCZ), possibly resulting from either cognitive deficits (e.g., limited working memory capacity) or diminished mental effort or both. Investment of mental effort itself can be affected by cognitive resources, task load, and motivational factors and has thus proven difficult to measure. ...

Som de sosiale dyrene vi er, søker vi råd hos våre medmennesker når vi har behov for hjelp og veiledning. Noen velger å gå til psykolog. Andre rådfører seg med sin(e) gode venn(er) for anerkjennelse og støtte. Andre går til prest for innspill. Noen velger å ikke gå til noen. Alt kan funke.

Psychological theory is advanced through empirical tests of predictions derived from quantitative cognitive models. As cognitive models are developed and extended, they tend to increase in complexity–leading to more precise predictions–which places concomitant demands on the behavioral data used to discriminate between candidate theories. To aid discrimination between cognitive models and, more ...

The placebo effect is considered the core example of mind-body interactions. However, individual differences produce large placebo response variability in both healthy volunteers and patients. The placebo response in pain, placebo analgesia, may be dependent on both the opioid system and the dopaminergic system. Previous studies suggest that genetic variability affects the function of these 2 systems. ...

Bakgrunn:<br>Antall krefttilfeller blant eldre øker sterkt, og i forbindelse med behandlingen kan kreftpasienter være utsatt for kognitive endringer. Mange av dem som overlever kreft, får nedsatt oppmerksomhet og konsentrasjon samt dårligere hukommelse. Attentional Function Index (AFI) er et instrument for å kartlegge kognitive prosesser, og det er utviklet i USA.<br>Hensikt:<br>Å redegjøre for ...