The development of the still-face effect: Mothers do matter

The Face-to-Face Still-Face paradigm (FFSF) has been used to investigate how infants react to stressful events. However, there is little developmental data on the FFSF effect, and whether it connects to a specific relationship (e.g., to a mother versus a stranger). This prospective longitudinal study aims to evaluate developmental changes in infant reaction to the FFSF presented by the mother or a stranger at 2, 4, 6, and 8 months of age (n = 39). Results show that infant negativity was expressed less in relation to a stranger, the identity effect. Results further suggest that from 6 to 8 months of age, stranger induced protest flattens out; whereas mother induced protest decreases. The results are discussed in relation to different theories regarding infant responsiveness.     

The development of joint visual attention: a longitudinal study of gaze following during interactions with mothers and strangers

Two- to 8-month-old infants interacted with their mother or a stranger in a prospective longitudinal gaze following study. Gaze following, as assessed by eye tracking, emerged between 2 and 4 months and stabilized between 6 and 8 months of age. Overall, infants followed the gaze of a stranger more than they followed the gaze of their mothers, demonstrating a stranger preference that emerged between 4 and 6 months of age. These findings do not support the notion that infants acquire gaze following through reinforcement learning. Instead, the findings are discussed with respect to the social cognitive framework, suggesting that young infants are driven by social cognitive motives in their interactions with others.     

Does causal knowledge help us be faster and more frugal in our decisions?

One challenge that has to be addressed by the fast and frugal heuristics program is how people manage to select, from the abundance of cues that exist in the environment, those to rely on when making decisions. We hypothesize that causal knowledge helps people target particular cues and estimate their validities. This hypothesis was tested in three experiments. Results show that when causal information about some cues was available (Experiment 1), participants preferred to search for these cues first and to base their decisions on them. When allowed to learn cue validities in addition to causal information (Experiment 2), participants also became more frugal (i.e., they searched fewer of the available cues), made more accurate decisions, and were more precise in estimating cue validities than was a control group that did not receive causal information. These results can be attributed to the causal relation between the cues and the criterion, rather than to greater saliency of the causal cues (Experiment 3). Overall, our results support the hypothesis that causal knowledge aids in the learning of cue validities and is treated as a meta-cue for identifying highly valid cues.     

Human-directed behaviour in goats is not affected by short-term positive handling

In addition to domestication, interactions with humans or task-specific training during ontogeny have been proposed to play a key role in explaining differences in human–animal communication across species. In livestock, even short-term positive interactions with caretakers or other reference persons can influence human–animal interaction at different levels and over different periods of time. In this study, we investigated human-directed behaviour in the ‘unsolvable task’ paradigm in two groups of domestic goats (Capra aegagrus hircus). One group was positively handled and habituated to a plastic box by the experimenter to retrieve a food reward, while the other group only received standard husbandry care and was habituated to the box without human assistance. In the unsolvable task, the lid was fixed to the box, with the reward inaccessible to the subjects. The goats were confronted with the unsolvable task three times. We observed no difference between the two groups regarding gaze and contact alternations with the experimenter when confronted with the task they cannot solve by themselves. The goats did not differ in their expression rates of both gaze and contact alternations over three repetitions of the unsolvable task; however, they showed earlier gaze and contact alternations in later trials. The results do not support the hypothesis that short-term positive handling or task-specific training by humans facilitates human-directed behaviour in goats. In contrast, standard husbandry care might be sufficient to establish humans as reference persons for farm animals in challenging situations.     

Exploring consumer adoption of a high involvement eco‐innovation using value‐belief‐norm theory

Environmental problems are increasingly becoming everyday issues of international organizations, national governments, and individual consumers. In consumer behavior research considerable effort has been focused on understanding environmentally significant behaviors. One such research stream uses the value‐belief‐norm theory (VBN) to explain and predict a number of relatively low involvement proenvironmental consumer behaviors such as household energy use. However, many consumer behaviors with significant impact on the environment are categorized as high involvement behaviors where VBN theory has not yet been employed. The aim of this paper is to arrive at a better understanding of consumer adoption of a high involvement eco‐innovation using VBN theory. As an example of a high involvement eco‐innovation the alternative fuel vehicle (AFV) which runs on fossil oil‐alternative fuels such as electricity and biofuels is used. A representative sample of adopters and non‐adopters of these vehicles in Sweden were surveyed. Differences between adopters and non‐adopters on sociodemographic and VBN factors were analyzed and the explanatory ability of the different factors on adoption was analyzed using logistic regression. The results showed that early adopters had a higher level of education and were much more likely to live in multi‐person households compared to non‐adopters. In terms of attitudinal factors, adopters exhibited higher levels of proenvironmental values, beliefs, and personal norms (PNs). Furthermore the results established that VBN factors were successful in explaining the early adoption of a high involvement eco‐innovation such as the AFV. The implications for consumer research, public policymakers, and for marketers of eco‐innovations are discussed. Copyright © 2011 John Wiley & Sons, Ltd.     

The non-specificity of theory of mind deficits: Evidence from children with communicative disabilities

The aim of the present paper was to investigate the performance on theory of mind tasks of four different clinical groups: children with deficits in attention, motor control and perception (DAMP), children with autism, children with Asperger syndrome, and non-vocal cerebral-palsied children. The children with DAMP performed on the same level as the comparison group on the first and second order theory of mind task. The children with autism and Asperger syndrome performed somewhat lower than the children with DAMP and the comparison group. However, in respect of the specifcity issue, only 6 out of 14 of the non-vocal participants successfully solved the first order theory of mind task, while 13 out of 14 children in a comparison group did. The children were matched for chronological age and IQ. The findings suggest that deficits in theory of mind are not specific to the autistic continuum, but can be found in other groups with communicative disabilities, implying that linguistic and communicative skills are important precursors in the development of theory of mind. The study also shows that severe dysfunction in attention, motor control, and perception is not associated with any theory of mind difficulties.     

Are fear-avoidance beliefs related to the inception of an episode of back pain? A prospective study

Abstract Fear-avoidance beliefs and catastrophizing have been implicated in chronic pain and theoretical models have been developed that feature these factor in the transition from acute to chronic pain. However, little has been done to determine whether these factors occur in the general population or whether they arc associated with the inception of an episode of neck or back pain. The aim of this study was to evaluate prospectively the effects of fear-avoidance beliefs and catastrophizing on the development of an episode of self-reported pain and associated physical functioning. To achieve this, we selected a sample of 415 people from the general population who reported no spinal pain during the past year. At the pretest a battery of questionnaires was administered to assess beliefs about pain and activity and it featured the Pain Catastrophizing Scale and a modified version of the Fear-Avoidance Beliefs Questionnaire. One year later outcome was evaluated by self-reports of the occurrence of a pain episode as well as a self-administered physical function test. The results showed that scores on both fear-avoidme and cabstrophizing were quite low. During the one year follow-up, 19% of the sample suffered an episode of back pain. Those with scores above the median on fear-avoidance beliefs at the pretest had twice the risk of suffering an episode of back pain and a 1.7 times higher risk of lowered physical function at the follow-up. Catastrophizing was somewhat less salient, increasing the risk of pain or lowered function by 1.5. but with confidence intervals falling below unity. These data indicate that fear-avoidance beliefs may be involved at a very early pint in the development of pain and associated activity problems in people with back pain. Theoretically. our results support the idea that fear-avoidance beliefs may develop in an interaction with the experience of pain. Clinically, the results suggest that catastrophizing and particularly fear-avoidance beliefs are important in the development of a pain problem and might be of use in screening procedures.     

What people believe about memory

Two representative samples of adult Norwegians (n=2000) were asked a set of general and specific questions regarding their beliefs and opinions about human memory. The results indicate that on many questions, such as time of the earliest memories, inhibiting effects of collaboration, and memory for dramatic versus ordinary events, the views of the general public concurred with current research findings, and people in general had realistic views about their own memory performance. On other questions, such as the reliability of olfactory as compared with visual and auditory memory, the memory of small children in comparison with that of adults, the likelihood of repression of adult traumatic memories, and on more general questions such as the possibility of training memory and the capacity limitations of long-term memory, a large proportion of the participants expressed views that are less supported by scientific evidence. Implications of these findings are briefly discussed.