Sunk-cost effects on purely behavioral investments

Although the sunk-cost effect is a well-documented psychological phenomenon in monetary investments, existing literature investigating behavioral investments (e.g., time, effort) has not replicated this effect except when such investments relate to monetary values. The current explanation for this discrepancy proposes that purely behavioral sunk-cost effects are unlikely to be observed because they are difficult to book, track, and balance in a mental account. Conversely, we argue that, through an effort-justification mechanism, people account for the amount of behavioral resources invested when selecting an alternative, in which case they may fall prey to purely behavioral sunk-cost effects. The results of two experiments support this prediction. Because many decisions involve behavioral investments, behavioral sunk-cost effects should be pervasive psychological phenomena.     

Three attempts to replicate the behavioral sunk-cost effect: a note on cunha and caldieraro (2009)

Cunha and Caldieraro (2009) investigated whether sunk-cost effects, which are well documented in hypothetical situations involving monetary investments, also occur in choice situations with purely behavioral investments. Their results suggest that decision makers indeed fall prey to behavioral sunk-cost effects under certain circumstances. I have been unable to replicate their pattern of results in three separate investigations. In these studies, I attempted to recover the effect using two other behavioral effort manipulations in addition to the manipulation used by Cunha and Caldieraro. This failure to replicate the pattern of results calls into question the robustness of the initial findings.     

Recovery of memory from infantile amnesia is developmentally constrained

Episodic memories formed during infancy are rapidly forgotten, a phenomenon associated with infantile amnesia, the inability of adults to recall early-life memories. In both rats and mice, infantile memories, although not expressed, are actually stored long term in a latent form. These latent memories can be reinstated later in life by certain behavioral reminders or by artificial reactivations of neuronal ensembles activated at training. Whether the recovery of infantile memories is limited by developmental age, maternal presence, or contingency of stimuli presentation remains to be determined. Here, we show that the return of inhibitory avoidance memory in rats following a behavioral reactivation consisting of an exposure to the context (conditioned stimuli [CS]) and footshock (unconditioned stimuli [US]) given in a temporally unpaired fashion, is evident immediately after US and is limited by the developmental age at which the reactivations are presented; however, it is not influenced by maternal presence or the time interval between training and reactivation. We conclude that one limiting factor for infantile memory reinstatement is developmental age, suggesting that a brain maturation process is necessary to allow the recovery of a “lost” infantile memory.

Hippocampus-dependent episodic memories formed early in life are rapidly forgotten. This process of forgetting is evolutionarily conserved and is associated with infantile amnesia, the inability of adults to recall early-life memories (Campbell and Spear 1972; Rovee-Collier 1999; Hayne 2004; Josselyn and Frankland 2012; Callaghan et al. 2014; Madsen and Kim 2016; Alberini and Travaglia 2017).Although they are rapidly forgotten, early-life experiences influence brain functions throughout life (Jacobs and Nadel 1985; Meaney et al. 1988; Sroufe et al. 1990; Brunson et al. 2005; Pryce et al. 2005; Mineka and Zinbarg 2006; Bale et al. 2010; Poulos et al. 2014; Perry and Sullivan 2014) and produce long-lasting biological changes in the brain. For example, aversive early-life experiences regulate the expression of hippocampal glucocorticoid receptor and hypothalamic–pituitary–adrenal (HPA) functions in a persistent fashion (Champagne and Curley 2009). Moreover, threatening experiences in early life can predispose individuals to psychopathologies such as post-traumatic stress disorder (PTSD) and mood and anxiety disorders (Heim and Nemeroff 2001). Consistent with this long-lasting influence on behavior, studies in rodent models have shown that, in contrast to what was previously believed, memories formed in infancy (at postnatal days 16–18 [PN16–PN18]) although not expressed, are not lost. Rather, they are stored over the longer term in a latent form and can reemerge at later times, up to adulthood, following behavioral reactivations or artificial stimulation of the neuronal ensembles activated at learning (Travaglia et al. 2016; Guskjolen et al. 2018; Bessières et al. 2020).In our previous studies based on rat inhibitory avoidance (IA), a paradigm in which the animal learns to avoid a context previously paired with a footshock, we confirmed that an infantile episodic learning event given at PN17 resulted in the typical rapid forgetting. We then found that, however, this memory was stored long term in a latent form, as demonstrated by the observation that it could reemerge following a behavioral reactivation consisting of exposure to the training context (conditioned stimulus [CS]) and a later time footshock of the same intensity that was used during training (unconditioned stimulus [US]) but now given in a distinct context. Reexperiencing either the context or the footshock alone failed to reinstate the infantile memory (Travaglia et al. 2016), suggesting that the return of infantile memory is limited by certain boundaries.Several questions about the conditions for the recovery of latent, infantile episodic memories remain to be addressed. First, is infantile memory reinstatement following the unpaired US presentation temporally regulated? Second, is there an age limit for memory reinstatement? Third, given that other types of learning, such as non-hippocampus-dependent cued conditioning, are regulated by the maternal presence during infancy (Moriceau and Sullivan 2006), is infantile episodic memory reinstatement limited or regulated by the presence of the mother? In this study, we set out to address these questions using IA in infant rats.     

Children's action-control behaviors (coping): A longitudinal validation of the behavioral inventory of strategic control

Abstract

Integrating multi-axial models with an action-theory perspective, we propose that children's coping strategies vary along four dimensions of strategic behavioral control: Direct Action, Indirect Action, Prosocial Action, and Antisocial Action. The Behavioral Inventory of Strategic Control (BISC) assesses these four general dimensions of strategic control. We contrast these four axial dimensions with six specific strategic combinations: Avoidance (Indirect-Antisocial), Emotional Support Seeking (Indirect-Prosocial), Social Exploitation (Indirect-Antisocial), Social Cooperation (Direct-Prosocial), Aggressive Individualism (Direct-Antisocial) and Hostility (Indirect-Antisocial). In a short-term longitudinal study (three occasions over four months) of 318 children (grades 2–6), we examined the validity of the BISC, showing that the hypothesized dimensional structure of children's strategic control behavior was strongly supported.     

Sunk Cost and Commitment to Dates Arranged Online

The influence of prior, irretrievable, investment (sunk cost) on commitment to a date arranged online was investigated. Participants were recruited from an undergraduate population. There were 145 participants (86 female) with a mean age of 19.42 years. Participants took part in a computer simulation of the process of arranging a date online. Participants invested one of five amounts of sunk cost into this process. Participants were then presented with the choice of attending the date arranged online or attending a (superior) blind date. Participants chose how much time that they wanted to commit to the (inferior) date arranged online. Results revealed a significant sunk cost effect (p = 0.003). The implications of the sunk cost effect having an influence over human relationships are discussed.     

Casualties of war and sunk costs: Implications for attitude change and persuasion

The purpose of the present research was to gain greater insight into how people's support for an ongoing war might be influenced by providing information about recent casualties of war. On intuitive grounds, one might expect that such information might often decrease support for the war, especially when the war in question is relatively unpopular. However, research and theory on the “sunk cost effect” suggests, somewhat paradoxically, that highlighting such losses could actually increase, not decrease, support for the war, as driven by the goal to avoid wasting valuable resources. Across two experiments (one focusing on the war in Iraq, another focusing on the war in Afghanistan), we found that the effects of the war casualty information on attitudes were moderated by a recent use and activation of the relevant “don't waste” goal, which had been previously primed in a non-political context. The implications of our findings for theory and research on attitude change, as well as the judgment and decision making area, are discussed.     

Inaction inertia, the sunk cost effect, and handedness: Avoiding the losses of past decisions

Strength of handedness, or the degree to which an individual prefers to use a single hand to perform various tasks, is a neurological marker for brain organization and has been shown to be linked to episodic memory, attribute framing, and anchoring, as well as other domains and tasks. The present work explores the relationship of handedness to both inaction inertia (the inclination to resist an action after previously bypassing a similar action) as well as to the sunk cost effect (the tendency to continue to engage in a behavior after an initial investment of time or money has been made). In Experiment 1, mixed-handers displayed a larger inaction inertia effect than strong-handers. In Experiment 2, they displayed a larger sunk cost effect than strong-handers. Experiments 3 and 4 extended the sunk cost finding into a different domain and explored how mixed- and strong-handers react to additional information designed to increase the comparative advantage of terminating, rather than continuing, a failed project. Overall, we found that mixed-handers were more likely to show inertia effects because of an increased aversion to losses. The results of Experiment 4 suggest that, when provided with additional information that made it clear that continuing a project would be a greater loss than terminating it, mixed-handers no longer showed a larger sunk cost effect than strong-handers, highlighting the importance of carefully considering exactly how sunk cost scenarios are worded and providing additional information on how mixed- and strong-handers differ in belief updating.     

The influence of prior choices on current choice

Three pigeons chose between random-interval (RI) and tandem, continuous-reinforcement, fixed-interval (crf-FI) reinforcement schedules by pecking either of two keys. As long as a pigeon pecked on the RI key, both keys remained available. If a pigeon pecked on the crf-FI key, then the RI key became unavailable and the crf-FI timer began to time out. With this procedure, once the RI key was initially pecked, the prospective value of both alternatives remained constant regardless of time spent pecking on the RI key without reinforcement (RI waiting time). Despite this constancy, the rate at which pigeons switched from the RI to the crf-FI decreased sharply as RI waiting time increased. That is, prior choices influenced current choice-an exercise effect. It is argued that such influence (independent of reinforcement contingencies) may serve as a sunk-cost commitment device in self-control situations. In a second experiment, extinction was programmed if RI waiting time exceeded a certain value. Rate of switching to the crf-FI first decreased and then increased as the extinction point approached, showing sensitivity to both prior choices and reinforcement contingencies. In a third experiment, crf-FI availability was limited to a brief window during the RI waiting time. When constrained in this way, switching occurred at a high rate regardless of when, during the RI waiting time, the crf-FI became available.     

老年人汉语阅读中预测误差成本的产生机制

阅读的认知加工机制随年龄变老只发生了量变还是也产生了质变, 是毕生发展研究领域的重要问题。要进行有效的语言处理, 读者必须结合已有的经验知识和当前语境对即将出现的信息进行预测加工。因此, 要解决上述问题就要回答老年人阅读中预测加工机制发生了怎样变化, 即预测误差成本是如何产生的。研究拟采用眼动脑电同步记录技术, 在自然阅读过程中实时获取语言处理的行为和神经指标, 聚焦老年人预测误差成本的产生机制, 主要从副中央凹视觉、工作记忆负荷及语言能力三方面解释预测误差成本产生的原因。研究成果对构建汉语阅读的毕生发展模型有重要意义。     

Deciding Whether to Complete or Terminate an Unfinished Project: A Strong Test of the Project Completion Hypothesis

The primary purpose of this research was to subject Conlon and Garland's (1993; Garland & Conlon, 1998) project completion hypothesis to a stronger test than it has faced in the past. We conducted an experiment in which we manipulated the degree of completion, sunk-cost amount, and anticipated sales price for a hypothetical real estate development project. The sales price information allowed participants to calculate the economic value of the project. Participants were also held “accountable” in the sense that they had to explain the reasoning behind their decisions to the experimenter. Together, the sales price information and accountability stipulation created an inducement to engage in an economically rational decision process. In spite of this inducement, participants were unduly affected by the project's closeness to completion. In fact, when the project was close to being finished, they often recommended completing the project even when it was economically unwise to do so. While the effects of the project completion manipulation were surprisingly strong, the sunk-cost manipulation had virtually no effect. Implications of these results and directions for future research are discussed.     

Sex differences in genetic and environmental effects on aggression

The aim of the present study was to investigate the genetic and environmental factors influencing teacher and parental rated aggression in boys and girls, asking whether the magnitude of these effects is similar across rater and sex. The study is part of an ongoing nationwide twin‐family study of behavioral development and health habits carried out in Finland. The sample consisted of 1651 twin pairs (264 monozygotic male, 300 monozygotic female, 292 dizygotic male, 278 dizygotic female, and 517 dizygotic opposite‐sex twin pairs), representing subsets of five 11‐ to 12‐year‐old twin cohorts (b. 1983–1987). The data were collected using the teacher and parental rating forms of the Multidimensional Peer Nomination Inventory. Structural equation models of sex‐limitation assessed sex differences in genetic and environmental influences on aggression. The results suggested significant genetic, common environmental, and specific environmental effects on aggression in both boys and girls, but the best fitting model differed depending on the informant. For both ratings, boys showed lower levels of heritability and higher levels of common environment than girls. In addition, the teacher rating data also suggested the presence of either sex‐specific common environmental effects or sex‐specific genetic effects. Support is provided also for sibling contrast effects, either at the behavioral level or as a rater bias. Aggr. Behav. 29:55–68, 2003. © 2003 Wiley‐Liss, Inc.     

How lexical is the lexicon? Evidence for integrated auditory memory representations

Previous research has shown that lexical representations must include not only linguistic information (what word was said), but also indexical information (how it was said, and by whom). The present work demonstrates that even this expansion is not sufficient. Seemingly irrelevant information, such as an unattended background sound, is retained in memory and can facilitate subsequent speech perception. We presented participants with spoken words paired with environmental sounds (e.g., a phone ringing), and had them make an “animate/inanimate” decision for each word. Later performance identifying filtered versions of the words was impaired to a similar degree if the voice changed or if the environmental sound changed. Moreover, when quite dissimilar words were used at exposure and test, we observed the same result when we reversed the roles of the words and the environmental sounds. The experiments also demonstrated limits to these effects, with no benefit from repetition. Theoretically, our results support two alternative possibilities: (1) Lexical representations are memory representations, and are not walled off from those for other sounds. Indexical effects reflect simply one type of co-occurrence that is incorporated into such representations. (2) The existing literature on indexical effects does not actually bear on lexical representations – voice changes, like environmental sounds heard with a word, produce implicit memory effects that are not tied to the lexicon. We discuss the evidence and implications of these two theoretical alternatives.     

On the relative independence of thinking biases and cognitive ability

In 7 different studies, the authors observed that a large number of thinking biases are uncorrelated with cognitive ability. These thinking biases include some of the most classic and well-studied biases in the heuristics and biases literature, including the conjunction effect, framing effects, anchoring effects, outcome bias, base-rate neglect, "less is more" effects, affect biases, omission bias, myside bias, sunk-cost effect, and certainty effects that violate the axioms of expected utility theory. In a further experiment, the authors nonetheless showed that cognitive ability does correlate with the tendency to avoid some rational thinking biases, specifically the tendency to display denominator neglect, probability matching rather than maximizing, belief bias, and matching bias on the 4-card selection task. The authors present a framework for predicting when cognitive ability will and will not correlate with a rational thinking tendency.     

Capitalizing on the potential of mobile health applications as behavioral interventions: A research agenda for calorie-tracking and activity-tracking applications

Mobile health applications (mHealth apps) are widely used tools that provide support for people seeking help managing their health in a particular behavioral domain (e.g., physical activity). Despite their popularity, evidence for the effectiveness of mHealth apps as stand-alone behavioral interventions is limited. Psychological and behavioral scientists can play a critical role in addressing this gap by pursuing programs of research that leverage basic behavioral science principles to test links between key features of mHealth apps (e.g., goal setting, feedback) and behavior change. To demonstrate this approach to evaluating mHealth apps, we systematically examine five key features of popular calorie-tracking and activity-tracking apps, explain how these features align with established behavior change techniques, discuss the evidence base for the effectiveness of these techniques within each behavioral domain, and situate predictions about how individual app features may promote behavior change in a conceptual model. Through this work, researchers can guide the design of mHealth apps and optimize them for facilitating sustained health behavior change.     

Adversary effects and the tactics of violent offenders

We examine the implication of adversary effects for target choice, lethal intent, and the use of weapons and allies in violent incidents. Adversary effects refer to the tendency of offenders to make tactical decisions based on the coercive power of victims and potential victims. Using the victim's gender as a proxy for coercive power, we analyzed violent incidents from the National Incident‐Based Reporting System (2005–2014). The sample included over six million assaults, robberies, and homicides. Consistent with adversary effects, offenders who attack males (vs. females) are more likely to (a) kill victims; (b) use guns, knives, blunt objects, poison, and automobiles; (c) use male (but not female) allies; and (d) use multiple allies. The evidence for target choice is mixed: unarmed female offenders, but not unarmed male offenders, are more likely to target females than males. The evidence shows how a simple theoretical principle can parsimoniously account for basic patterns of violence in society related to gender, weapons, and group violence.     

Talking Health With a Machine: How Does Message Interactivity Affect Attitudes and Cognitions?

By affording interactive communication and natural, human‐like conversations, can media tools affect the way we engage with content in human–machine interactions and influence our attitudes toward that content? A between‐subjects experiment (N = 172) examined the effects of two communication variables: (a) message‐interactivity and (b) conversational tone, in an online health information (Q&A) tool. Findings suggest that informal conversational tone lowers perceptions of relative susceptibility to health risks. Perceived contingency positively mediates the influence of message interactivity on individuals' health attitudes and behavioral intentions whereas perceived interactivity negatively mediates the relationships between these variables. These contrasting mediation effects are further explored via a phantom model analysis that tests two theoretically distinct paths, with implications for both theory and practice.     

Preference-based escalation: A new interpretation for the responsibility effect in escalating commitment and entrapment

A prominent finding in escalating commitment and entrapment research is the “responsibility effect”: people invest more in a losing course of action or persist with it for longer if they themselves initiated this action (responsibility) as opposed to if it was assigned to them. We argue that this effect is driven by participants’ preferences. Responsible participants usually prefer the chosen alternative since they have chosen it themselves. Non-responsible participants, in contrast, represent a mix of persons who either favor or disfavor the chosen alternative. In two experiments, we demonstrate that responsible participants favor the chosen course of action more strongly than non-responsible participants do, that these preferences facilitate reinvestment in and persistence with the chosen course of action, and that responsibility has no effect over and above this effect of preferences. Non-responsible participants preferring the chosen course of action made similar reinvestments and exhibited similar persistence as responsible participants.     

积极刻板印象会产生消极影响?

积极刻板印象是对社会群体的积极特质的描述, 以往刻板印象的相关研究主要聚焦于消极刻板印象, 却忽略了对积极刻板印象尤其是其消极影响的探讨。基于此, 分别从种族、性别和年龄这三个方面详细梳理了积极刻板印象的积极影响和消极影响, 并阐述了其产生的条件, 包括积极刻板印象的微妙激活和明显激活、积极刻板印象的准确表述和极端表述、积极刻板印象阐述者的内外群身份、呈现积极刻板印象的文化背景等。未来研究可从集体主义文化、研究领域和对象, 干预方法和消极刻板印象的积极影响等方面进一步探讨。