The extent to which social relationships influence cognitive aging is unclear. In this study, we investigated the association of midlife quality of close relationships with subsequent cognitive decline. Participants in the Whitehall II Study (n = 5,873; ages 45-69 years at first cognitive assessment) underwent executive function and memory tests 3 times over a period of 10 years (1997-1999 to 2...

The concept of abduction can be useful to clarify the conflict instinct vs. inference in cognitive science. The resulting idea that abduction is partly explicable as a biological instinctual phenomenon and partly as a more or less “logical” operation related to “plastic” cognitive endowments of all organisms naturally leads to stress that many animals – traditionally considered “mindless” organ...

abstract barberry is one of the most important products of south khorasan province. the objective of this study is analyzing the qualitative factors affecting the price of barberry in this province. survey data from 100 questionnaires using simple random sampling of households in the city of birjand, 1389 has been completed, was extracted. results of the estimating hedonic price model show that...

Consumers may overestimate the precision of their demand forecasts. This overcon…dence creates an incentive for both monopolists and competitive …rms to o¤er tari¤s with included quantities at zero marginal cost, followed by steep marginal charges. This matches observed cellphone service pricing plans in the US and elsewhere. An alternative explanation with common priors can be ruled out in fav...

Overview Over the past decade the rapid proliferation of electronic commerce technologies has fundamentally transformed the way we conduct business. This trend is expected to accelerate in the coming years due to a number of different factors, including the introduction of new mobile and ubiquitous computing technologies; the wider recognition by business of the strategic advantages offered by ...

This article is part of an investigation in the role and value of emotion in electronic commerce. As marketing studies have shown, emotion plays a critical role in shopping. Although emotional research is emerging in human-computer interaction, practical measures of affective responses are few. SAM (Self-Assessment Manikin) originally developed by Lang, is proposed as such a tool. This study ex...