MYTHS AND TRUTHS ABOUT AN OFTEN-USED, LITTLE-UNDERSTOOD STATISTICAL PROCEDURE If you go to a consumer research conference, you will hear tales of how experiments have undergone particular statistical rites: the attainment of the elusive crossover interaction, the demonstration of full mediation through Baron and Kenny’s sacred procedure, and so on. DSN has nothing against any [...]
HORMONE LINKED TO IN-GROUP GOODNESS, OUT-GROUP BADNESS Who doesn’t like oxytocin? Who could dislike any substance referred to as a cuddle chemical? The answer may be you, if you are not in with the crowd feeling the effects of the hormone. Carsten de Dreu and a super-long list of co-authors (listed below), have administered oxytocin to [...]
QUIZ YOUR LOVED ONES ABOUT THEIR PROPENSITY TO PLAN John Lynch, Richard Netemeyer, Stephen Spiller, Alessandra Zammit have recently published in the Journal of Consumer Research this article on the propensity to plan and financial well being ABSTRACT Planning has pronounced effects on consumer behavior and intertemporal choice. We develop a six-item scale measuring individual [...]
COUNTERINTUITIVE PROBLEM, INTUITIVE REPRESENTATION Blog posts about counterintuitive probability problems generate lots of opinions with a high probability. Andrew Gelman and readers have been having a lot of fun with the following probability problem: I have two children. One is a boy born on a Tuesday. What is the probability I have two boys? The [...]
In baseball, what are the chances the winner will win again against the same opponent the very next day?
How many observations should you have before constructing a confidence interval?
MISPLACED SYMPATHY Decision Science News knows that when faculty from London Business School travel abroad, they are frequently asked “how are things at the London School of Economics?” When the London Business School faculty members say politely that they are at LBS and not LSE, the askers suddenly look sympathetic, as if they’d inquired about [...]
THE TECHNICAL DETAILS, TUTORIALS, WALK-THROUGHS A few posts back, we showed how classic decision making experiments are being replicated on Amazon’s insta-subject-pool otherwise know as Mechanical Turk (aka MT). After that, Steven Pinker, at the SJDM keynote, presented Mechanical-Turk-collected data on perceptions of whether the past or present is perceived as more violent. This week, [...]
PROFILE OF A PIONEER IN SOCIAL PSYCHOLOGY Decision Science News has learned that the creator of expectancy-value theory, Martin Fishbein, has died. From Icek Aizen: We report with great sadness that our friend and colleague, Martin Fishbein, died Friday, November 27 of a heart attack while on a visit to London. Marty was a professor [...]
INCENTIVES TO STATE PROBABILITIES OF BELIEF TRUTHFULLY We have all been there. You are running an experiment in which you would like participants to tell you what they believe. In particular, you’d like them to tell you what they believe to be the probability that an event will occur. Normally, you would ask them. But [...]
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