Purpose
The purpose of this paper is to highlight the role of replications for science, and in particular the knowledge development process.
Design/methodology/approach
Descriptive research on the disclosure of sample parameters which are needed for replication was conducted. The analysis includes 2,982 studies from four top-tier marketing journals.
Findings
Published parameters are insufficient for replication and, therefore, impede knowledge development.
Originality/value
The paper offers a unique data set for further investigation. In total, 2,982 studies from the defined journals (Journal of Consumer Research, Journal of Marketing, Journal of Marketing Research and Marketing Science) were analyzed. Hereby this paper enables insights into reporting practices of current marketing research and highlights the role of replication research in validating earlier research. It empirically shows, to the authors' best knowledge for the first time, that the insufficient reporting is one of the major reasons for the lack of replications.
Reciprocity motivates to reward those who are kind (= positive reciprocity) and to punish those who are unkind (= negative reciprocity). The neurotransmitter serotonin (5-HT) modulates human behavior in numerous social situations, such as retaliation in response to perceived unfairness. In a placebo-controlled study, we used acute tryptophan depletion (ATD) to investigate the influence of available serotonin on choice behavior and reciprocity in the Hawk-Dove game. This game illustrates a conflict situation and incorporates two potential strategies: the cooperative Dove strategy and the uncooperative, more aggressive Hawk strategy. After strategic choices, we elicited the subjects’ expectations (= beliefs) regarding the opponent’s choices and controlled for risk preferences and current mood. We defined strategy choices as negative reciprocity when the participants opted for Hawk in response to an expected Hawk. We hypothesized that the ATD-induced reduction of 5-HT availability would increase participants’ preferences for negative reciprocity. Generalized estimating equations reveal no significant main effect of ATD on assessed belief, mood, or risk attitude. But assessment of ATD’s marginal effects over beliefs suggests that ATD significantly increases the tendency for negative reciprocity, whereas positive reciprocity (Dove in response to an expected Dove) is unaffected. We could therefore demonstrate that 5-HT availability mediates (negative) reciprocal behavior in social decision-making.
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