Economic Behavior under Alcohol Influence: An Experiment on Time, Risk, and Social Preferences

We report results from an incentivized laboratory experiment to provide controlled evidence on the causal effects of alcohol consumption on risk preferences, time perception and altruism. Our design allows disentangling the pharmacological effects of alcohol intoxication from those mediated by expectations, as we compare behaviors of three groups of subjects: those participating to an experiment with no reference to alcohol, those exposed to the possibility of consuming alcohol but assigned to a placebo and those having effectively consumed alcohol. Once randomly assigned to one treatment, subjects were administered a series of consecutive economic tasks, being the sequence kept constant across treatments. After controlling for both the willingness to pay and the potential misperception of probabilities as elicited in the experiment, we do not detect any effect of alcohol in depleting subjects’ risk tolerance. On the contrary, we find that alcohol intoxication increases impatience. Moreover, we find that alcohol makes subjects less generous as we detect a negative relationship between the blood alcohol concentration and the amount of money donated to NGOs

An online database of infant functional near infraRed spectroscopy studies: a community-augmented systematic review

Until recently, imaging the infant brain was very challenging. Functional Near InfraRed Spectroscopy (fNIRS) is a promising, relatively novel technique, whose use is rapidly expanding. As an emergent field, it is particularly important to share methodological knowledge to ensure replicable and robust results. In this paper, we present a community-augmented database which will facilitate precisely this exchange. We tabulated articles and theses reporting empirical fNIRS research carried out on infants below three years of age along several methodological variables. The resulting spreadsheet has been uploaded in a format allowing individuals to continue adding new results, and download the most recent version of the table. Thus, this database is ideal to carry out systematic reviews. We illustrate its academic utility by focusing on the factors affecting three key variables: infant attrition, the reliability of oxygenated and deoxygenated responses, and signal-to-noise ratios. We then discuss strengths and weaknesses of the DBIfNIRS, and conclude by suggesting a set of simple guidelines aimed to facilitate methodological convergence through the standardization of reports

Seeing inferences: brain dynamics and oculomotor signatures of non-verbal deduction

International audienceWe often express our thoughts through words, but thinking goes well beyond language. Here we focus on an elementary but basic thinking process, disjunction elimination, elicited by elementary visual scenes deprived of linguistic content, describing its neural and oculomotor correlates. We track two main components of a nonverbal deductive process: the construction of a logical representation (A or B), and its simplification by deduction (not A, therefore B). We identify the network active in the two phases and show that in the latter, but not in the former, it overlaps with areas known to respond to verbal logical reasoning. Oculomotor markers consistently differentiate logical processing induced by the construction of a representation, its simplification by deductive inference, and its maintenance when inferences cannot be drawn. Our results reveal how integrative logical processes incorporate novel experience in the flow of thoughts induced by visual scenes

Distribution of additional sum required to postpone payment by eight days.

<p>Distribution of additional sum required to postpone payment by eight days.</p

<i>Risk aversion</i> by Treatment and Gender.

<p><i>Risk aversion</i> by Treatment and Gender.</p

Misperception of Blood Alcohol Concentration (MPBAC).

<p>Misperception of Blood Alcohol Concentration (MPBAC).</p

Alcohol, Value of Money and Optimism.

<p>Alcohol, Value of Money and Optimism.</p