Motivated but not engaged: The implicit achievement motive requires difficult or unclear task difficulty conditions to exert an impact on effort

Integrating the achievement motive literature and motivational intensity theory, we expected the implicit achievement motive (nAch) to directly determine effort mobilization when task difficulty is unclear. However, nAch should interact with task difficulty in determining effort mobilization when task difficulty is clear. Participants worked on an easy versus difficult memory task (Study 1) or a clear versus unclear arithmetic task (Study 2). We used the Picture-Story-Exercise to assess nAch and pre-ejection period (PEP) to operationalize effort. As predicted, PEP reactivity was strong in the difficult-high-nAch condition and in the unclear-high-nAch condition but low in the other three conditions. Supporting motivational intensity theory, our results showed that nAch requires difficult or unclear task conditions to exert a noticeable impact on effort.     

Towards consensus in conceptualizing and operationalizing physical activity maintenance

Recognized challenges in promoting long-term physical activity maintenance may be due to inconsistencies in the conceptualization and operationalization of behavior maintenance terminology in physical activity research. The overall goal of this paper is to propose a framework and agenda for the development of a common set of terms, definitions, and measures for physical activity maintenance concepts that can be widely tested and evaluated. To initiate this effort, this paper (1) provides an overview of conceptual and operational definitions of physical activity maintenance used in the empirical literature, (2) evaluates whether behavior maintenance terms used in addiction science can be translated to physical activity, (3) recommends research directions for developing consensus definitions of physical activity maintenance, and (4) proposes a conceptual model of physical activity maintenance with inflection points that require operational definitions to be decided upon through consensus efforts in the field. Consensus over the conceptualization and operationalization of physical activity maintenance is needed to draw conclusions regarding which policies and programs are best able to promote long-term behavior change.     

Analysis of heart rate variability amongst cyclists under perceived variations of risk exposure

Cycling as a mode of travel provides an opportunity for many people to increase their levels of regular physical activity and contribute to their mental and physical health. Heart rate is often used as a means of measuring the intensity and energy expenditure of physical activity. However, heart rate is also linked to emotional factors such as anxiety and fear. Perceptions of risk due to external factors such as other road users and infrastructure may arouse such emotions in urban cyclists. The present study set out to investigate whether or not perceptions of risk among urban cyclists may lead to increased heart rates. Cyclists completed a test route in normal traffic conditions in Cork, Ireland and heart rates and self-reported risk ratings were recorded in real time. Evidence was found of a link between perceptions of risk and heart rates. This raises questions regarding the use of heart rate to estimate exercise intensity and energy expenditure during urban cycling. The perceptions of cyclists of their safety in relation to various road elements on familiar routes were also assessed, as well as specific events which they perceive to be high in risk. The results indicate that incidents involving car traffic and busy roads which offer no protection from interaction with car traffic are associated with greatest perceptions of risk.     

Predicting Individuals’ Experienced Fear From Multimodal Physiological Responses to a Fear-Inducing Stimulus

Emotions are experienced differently by individuals, and thus, it is important to account for individuals’ experienced emotions to understand their physiological responses to emotional stimuli. The present study investigated the physiological responses to a fear-inducing stimulus and examined whether these responses can predict experienced fear. A total of 230 participants were presented with neutral and fear-inducing film clips, after which they self-rated their experienced emotions. Physiological measures (skin conductance level and response: SCL, SCR, heart rate: HR, pulse transit time: PTT, fingertip temperature: FT, and respiratory rate: RR) were recorded during the stimuli presentation. We examined the correlations between the physiological measures and the participants’ experienced emotional intensity, and performed a multiple linear regression to predict fear intensity based on the physiological responses. Of the participants, 92.5% experienced the fear emotion, and the average intensity was 5.95 on a 7-point Likert scale. Compared to the neutral condition, the SCL, SCR, HR, and RR increased significantly during the fear-inducing stimulus presentation whereas FT and PTT decreased significantly. Fear intensity correlated positively with SCR and HR and negatively with SCL, FT, PTT, and RR. The multiple linear regression demonstrated that fear intensity was predicted by a combination of SCL, SCR, HR, FT, and RR. Our findings indicate that the physiological responses to experiencing fear are associated with cholinergic, sympathetic, and α-adrenergic vascular activation as well as myocardial β-sympathetic excitation, and support the use of multimodal physiological signals for quantifying emotions.     

Maternal communicative functions and mind-mindedness at 16 months as predictors of children’s internal and non-internal language at 20 months

The effects of Communicative functions and Mind-Mindedness on children’s language development have been typically investigated in separate studies. The present longitudinal research was therefore designed to yield new insight into the simultaneous impact of these two dimensions of maternal responsiveness on the acquisition of expressive language skills in a sample of 25 mother-child dyads. The frequencies of five communicative functions (Tutorial, Didactic, Conversational, Control and Asynchronous) and two types of mind-related comments (attuned vs. non-attuned) were assessed from a 15-min play session at 16 months. Children’s expressive language was examined at both 16 months (number of word types and tokens produced, and number of words attributed to the child in the Questionnaire for Communication and Early Language development) and 20 months (number of internal and non-internal words attributed to the child in the Italian version of the Mac Arthur-Bates Communicative Development Inventory). The main finding was that mothers’ use of attuned mind-related comments at 16 months predicted internal state language at 20 months, above and beyond the effects of CFs and children’s linguistic ability at 16 months; in addition, mothers’ Tutorial function at 16 months marginally predicted non-internal state language at 20 months, after controlling for MM and children’s linguistic ability at 16 months. These results suggest that different expressions of maternal responsiveness influence distinct aspects of children’s expressive language in the second year of life, although the effects of MM appear to be more robust.     

Mode and tempo relative contributions to “happy-sad” judgements in equitone melodies

Judgement of emotion conveyed by music is determined notably by mode (major-minor) and tempo (fast-slow). This suggestion was examined using the same set of equitone melodies, in two experiments. Melodies were presented to nonmusicians who were required to judge whether the melodies sounded “happy” or “sad” on a 10-point scale. In order to assess the specific and relative contributions of mode and tempo to these emotional judgements, the melodies were manipulated so that the only verying characteristic was either the mode or the tempo in two “isolated” conditions. In two further conditions, mode and tempo manipulations were combined so that mode and tempo either converged towards the same emotion (Convergent condition) or suggested opposite emotions (Divergent condition). The results confirm that both mode and tempo determine the “happy-sad” judgements in isolation, with the tempo being more salient, even when tempo salience was adjusted. The findings further support the view that, in music, structural features that are emotionally meaningful are easy to isolate, and that music is an effective and reliable medium to study emotions.     

Regulating emotions under exposure to negative out-group-related news material results in increased acceptance of out-groups

ABSTRACT

Negative emotions affect the acceptance of out-groups. Here, we investigated whether modifying negative emotions would affect perceptions of out-groups. We experimentally manipulated the use of two emotion regulation strategies: suppression of emotional expression and cognitive reappraisal, the latter involving reframing a situation to mitigate its emotional impact. Using a population-based sample (N = 317), we conducted an online randomized controlled trial. Participants regulated their emotions while reading threatening news about out-groups. Not only reappraisal, but also suppression increased immediate acceptance of out-groups. The effect of reappraisal was partly mediated by decreased disgust, suggesting unique effects of reappraisal on this emotion. In the suppression condition acceptance decreased at high levels of habitual emotion regulation, whereas reappraisal showed an opposite tendency. Previous research may have underestimated the importance of different emotion regulation strategies on prejudice, and that relatively simple interventions can affect prejudice. The findings are of interest to prejudice prevention programs.     

知识密集型组织的雇佣关系民主治理和员工创造力研究

本文探讨了雇佣关系民主治理对员工创造力影响的中介机制和边界条件,并利用跨层次的调查数据进行实证研究。研究结果发现:(1)雇佣关系民主治理显著正向影响员工创造力;(2)内在动机在雇佣关系民主治理与员工创造力间起部分中介作用;(3)组织知识密集度对雇佣关系民主治理与员工内在动机的正向关系间有着显著强化作用;(4)雇佣关系民主治理和组织知识密集度的交互作用通过内在动机的中介作用,进而影响员工创造力。