Liking for name predicts happiness: A behavioral genetic analysis

Research has established that humans tend to view their names in a positive light and liking for one’s name is positively associated with subjective well-being. In this study, the genetic basis of individual difference in liking for one’s name was examined in a survey of 304 pairs of twins from Beijing, China. Results showed that (1) liking for name was heritable (47%), while unique environment also played a role (53%); (2) the positive association between name-liking and subjective well-being is driven by common genetic (r_g: .21–.41) and non-shared environmental (r_e: .14–.22) influences. These findings have provided novel evidence that liking for one’s name is a fundamentally important trait and further shed light on the understanding of implicit self-esteem.     

Cars overtaking cyclists on different urban road types – Expectations about passing safety are not aligned with observed passing distances

Cars overtaking cyclists have been identified as a source of crashes and subjective risk. Several studies investigated the passing distance for different road types. There has been less research concerning cyclists’ expectations concerning the passing distance at different road types. Thus, we aim at contrasting cyclists’ expectations about the passing safety for different speed limits and cycling infrastructures with the passing distances observed at corresponding urban road types. For this purpose, we show participants images of a predefined set of survey zones in a web-based survey, and ask them about the expected passing safety of cars overtaking them when imagining riding their bikes at these locations. We measure the observed passing distances at the same survey zones with a bike-mounted sensor. We find that cars meet the German legal minimum passing distance of 1.5 m in towns in only 30% of all observed events. In 30 km/h speed zones, passing distances at roads featuring dedicated cycling infrastructure (e.g. bike lanes, cycling boulevards) are decreased as compared to those featuring no cycling infrastructure. In contrast, people estimate that the passing safety on roads with dedicated cycling infrastructure is safer than without cycling infrastructure. This effect is even more pronounced on living streets. Situations where oncoming cars (e.g. living streets, ‘opposite’ roads) must be passed in close distance are apparently not perceived as particularly dangerous. Cycling tracks in 50 km/h speed zones increase both the observed passing distance and the corresponding expectations about passing safety. Taken together, the qualitative comparison of the two datasets implies that cyclists’ expectations about cars passing them in a more adequate and safe distance in streets with reduced speed limits and dedicated cycling infrastructure are not justified in light of the actually observed passing distances. Possible explanations for the contradicting patterns could be that cyclists prefer situations where space is explicitly dedicated for bikes, that they account for the anticipated car traffic volume, and that they assume oncoming cars as less dangerous to pass.     

Source reliability and the conjunction fallacy

Information generally comes from less than fully reliable sources. Rationality, it seems, requires that one take source reliability into account when reasoning on the basis of such information. Recently, Bovens and Hartmann (2003) proposed an account of the conjunction fallacy based on this idea. They show that, when statements in conjunction fallacy scenarios are perceived as coming from such sources, probability theory prescribes that the "fallacy" be committed in certain situations. Here, the empirical validity of their model was assessed. The model predicts that statements added to standard conjunction problems will change the incidence of the fallacy. It also predicts that statements from reliable sources should yield an increase in fallacy rates (relative to unreliable sources). Neither the former (Experiment 1) nor the latter prediction (Experiment 3) was confirmed, although Experiment 2 showed that people can derive source reliability estimates from the likelihood of statements in a manner consistent with the tested model. In line with the experimental results, model fits and sensitivity analyses also provided very little evidence in favor of the model. This suggests that Bovens and Hartmann's present model fails to explain fully people's judgements in standard conjunction fallacy tasks.     

Does probability weighting matter in probability elicitation?

One of the most widely used methods for probability encoding in decision analysis uses binary comparisons (choices) between two lotteries: one that depends on the values of the random variable of interest and another that is contingent on an external reference chance device (typically a probability wheel). This note investigates the degree to which differences in probability weighting functions between the two types of events could affect the practice of subjective probability encoding. We develop a general methodology to investigate this question and illustrate it with two popular probability weighting functions over the range of parameters reported in the literature. We use this methodology to (a) alert decision analysts and researchers to the possibility of reversals, (b) identify the circumstances under which overt preferences for one lottery over the other are not affected by the weighting function, (c) document the magnitude of the differences between choices based on probabilities and their corresponding weighting functions, and (d) offer practical recommendations for probability elicitation.     

Young children's use of statistical sampling evidence to infer the subjectivity of preferences

A crucial task in social interaction involves understanding subjective mental states. Here we report two experiments with toddlers exploring whether they can use statistical evidence to infer the subjective nature of preferences. We found that 2-year-olds were likely to interpret another person’s nonrandom sampling behavior as a cue for a preference different from their own. When there was no alternative in the population or if the sampling was random, 2-year-olds did not ascribe a preference and persisted in their initial beliefs that the person would share their own preference. We found similar but weaker patterns of responses in 16-month-olds. These results suggest that the ability to infer the subjectivity of preferences based on sampling information begins to emerge between 16 months and 2 years. Our findings provide some of the first evidence that from early in development, young children can use statistical evidence to make rational inferences about the social world.     

‘Protective donation’: When refusing a request for a donation increases the sense of vulnerability

May refusing a request for a donation be conceived as ‘tempting fate’? Do people feel more vulnerable when they do not comply with such a request? In this paper we examine the link between subjective perceptions of vulnerability and people's willingness to help address a threatening cause. Results of five studies, examining a real life situation, hypothetical scenarios and a controlled lab game with actual monetary costs and rewards, show first, that deliberately helping is positively correlated with the perceived likelihood of becoming a victim of the same misfortune. Second, we show that refusing to donate to a threatening misfortune increases sense of vulnerability. Both phenomena occur especially for people with strong belief in a just world, who believe in a causal relationship between people's behavior and their fortune (rewards and punishments).     

Rats’ memory for time and relational responding in the duration-comparison procedure

Rats were trained in a duration-comparison task to press one lever if the comparison duration (c) was 1.2-s shorter than a standard duration (s), and another lever if c was 1.2-s longer than s. The interval between s and c duration was 1 s. The 10 duration pairs used during training controlled for the absolute duration of c and the total duration of an s-c pair. The total duration of an s-c pair was not predictive of the correct response. In Experiment 1, during equal-duration pair test trials, rats increasingly responded long (i.e., c > s) as the s-c delay was lengthened. In Experiment 2, long responding increased as the s-c delay was lengthened, even when the illumination condition during the s-c delay differed from that during the intertrial interval (ITI). In Experiment 3, transfer to novel duration pairs was assessed. Overall accuracy for the novel duration pairs was significantly above chance, but transfer performance was also affected by the absolute value of the novel c durations. This is the first study to demonstrate that rats can acquire relational duration discriminations. As in previous studies with pigeons the evidence was consistent with subjective-shortening of the standard duration and there was also evidence of a reliance on a mixture of absolute and relational strategies in responding.     

Forgivingness and subjective well-being in adulthood: The moderating role of future time perspective

This cross-sectional study tested the hypothesis that future time perspective moderates the association between forgivingness and subjective well-being. Results from a sample of adults (N = 962, 19-84 years) indicate that time perspective and forgivingness were strongly associated with positive affect, life satisfaction and optimism. In support of the hypothesis, forgivingness was more strongly associated with positive well-being for those who perceived their future time as limited as compared to those with an open-ended time perspective. The moderating effect of future time perspective holds over and above the effect of chronological age. Moderating effects were not found for negative affect and pessimism. The results underscore the importance of perceived time horizons for the interplay between forgivingness and well-being.     

Did curiosity kill the cat? Evidence from subjective well-being in adolescents

The purpose of this study was to explore the relations between trait curiosity and the well-being of adolescents. The differences between adolescents with high, average and low trait curiosity on a number of subjective well-being (SWB) and distress measures have been examined. The sample consisted of 408 high school students, with an average age of 16.6 years. The results showed that adolescents high in trait curiosity have higher levels of life satisfaction and positive affect and greater sense of purpose in life and hope than adolescents with both low and average curiosity. Contrary to significant differences on positive well-being measures, there were no robust differences between adolescents with high, average and low curiosity in distress. The findings of this research indicated that curiosity is a specific predictor of positive well-being and gave support to the two continua model of mental health, which view positive and negative well-being as relatively independent constructs.     

现实利他行为与网络利他行为对大学生主观幸福感的影响：多重中介模型

为探讨现实利他行为与网络利他行为对主观幸福感的影响,并着力考察现实社会支持、网络社会支持与自尊在其中所起的作用,以1064名在读大学生为被试进行问卷调查,研究结果显示：（1）现实利他行为与网络利他行为均能在一定程度上预测主观幸福感。（2）现实、网络社会支持在现实、网络利他行为对主观幸福感的影响中起中介作用。（3）现实社会支持和自尊、网络社会支持和自尊在现实、网络利他行为对主观幸福感的影响中起多重中介作用。