Development of Japanese version of the long‐term mating orientation scale (LTMO‐J)

The purpose of this study was to validate the 7‐item long‐term mating orientation scale (LTMO) as translated into Japanese. Two samples of Japanese adults (N = 2000; 50.0% male; Mage = 40.9 for the first survey; N = 300; 54.7% male; Mage = 42.4 for the second survey) completed a web‐based questionnaire, including the Japanese translation of the LTMO. The results showed that the psychometric properties of the Japanese LTMO scale were comparable to those of the original English version. The scale had adequate reliability based on Cronbach's α and McDonald's ω. Convergent validity was demonstrated by the correlation between the LTMO scores and related variables: human life history strategies, short‐term sociosexual orientation, attitude to infidelity, romantic attachment style, and so on. The translated scale provides a valid and reliable instrument in Japanese that measures human mating strategy.     

Personality Change from Life Experiences: Moderation Effect of Attachment Security

This study focused on effects of life experiences on change in personality and moderation effects of attachment security on the life experience influences. With a sample of Japanese university students (N = 1,000; 679 female; M = 19.72; SD = 1.26; age range, 18–25 years), the Big Five personality traits were assessed twice. The assessment interval was 20 weeks. Hierarchical linear modeling (HLM) analyses revealed that there were large between‐individual differences in change and stability of the Big Five personality traits, which were accounted for by the amount of daily positive and negative life experiences during the interval period. Moreover, multi‐group HLM analyses indicated that the life experience effects were moderated by participants' attachment security at Time 1. These findings suggest that the accumulation of small daily experiences may work for the personality development of university students and that environmental influences may vary by individual susceptibility to experiences, like attachment security.     

Asymmetrical neural adaptation in lower leg muscles as a consequence of stereotypical motor training

Despite well-authorized facts regarding asymmetrical architectural changes between different limbs after persistent participation in particular motor training, no studies have addressed the neural aspects to the present. The authors undertook the study to elucidate the possibility of neural adaptation on a limb-by-limb basis after repetitive engagement in a particular motor training routine. We investigated lower leg muscles in endurance-trained track runners who have been trained by routinely running on a track in counterclockwise direction on curved paths. Stretch reflex responses in the plantarflexor muscles (soleus [SOL], medial [MG], and lateral head of the gastrocnemius muscle) were evaluated bilaterally with participants sitting at rest. Comparisons were made between homonymous muscles of the right (corresponding to outside leg for track running) and left leg (inside leg, likewise) and with a group of nontrained controls. The result clearly demonstrated that the responses were prominently different between the legs (thus, asymmetrical) in the MG muscles and partially in the SOL muscles in the trained group. In contrast, no such differences were obtained in the nontrained control group. The result demonstrated that neural adaptation took place asymmetrically and that could be attributable to their repetitive engagement in the stereotypical motor task.     

Monetary Valuations of Life Conditions in a Consistent Framework: The Life Satisfaction Approach

The life satisfaction approach (LSA) enables researchers to attach monetary values to nonmarket circumstances that affect people’s life satisfaction. Previous studies employ LSA to examine how the environment, health, and social capital, etc. affect life satisfaction. This study focuses on the OECD Better Life Index and intends to evaluate more comprehensive socioeconomic characteristics. Considering comprehensive factors about life enables us to avoid biased estimation. This study also considers more consistent estimation methods. Previous studies tend to attach monetary valuations in different settings. Thus, it is difficult to compare the effects of different socioeconomic circumstances. This study employs LSA to estimate the happiness functions of Japanese survey respondents by incorporating extensive socioeconomic characteristics as explanatory variables. Controlling for multiple factors affecting subjective wellbeing, we more accurately attach monetary values to each factor within a consistent analytical framework. By doing so, we assess factors’ relative comparable influence on subjective wellbeing. We adopt three estimation procedures to check robustness against model specifications. Results indicate that respondents value small changes in their socioeconomic circumstances more highly than other factors. Especially, circumstances surrounding quality of life carry higher equivalent monetary valuations than material living standards.     

The effects of fixed‐interval schedules on variability of pigeons' pecking location

Many studies that have investigated performance under reinforcement schedules have measured response rate or interresponse time, which reflect the temporal dimension of responding; however, relatively few studies have examined other dimensions. The present study investigated the effects of fixed‐interval schedules on the location of pigeons' pecking response. A circular response area 22.4 cm in diameter was used so that the pecking responses were effective over a wide range. Pigeons were exposed to a fixed‐interval schedule whose requirement was systematically varied between conditions. Response location moved closer to the location of the last reinforced response as time elapsed in each trial. Additionally, as the fixed‐interval duration requirement increased, response locations shifted to the border of the response area and the variability of response locations increased. These results suggest that fixed‐interval schedules systematically control response location.     

The “Extended Mind” Approach for a New Paradigm of Psychology

In this paper, I would like to propose the idea of “extended mind” for a new paradigm of psychology. Kohler (Integrative Psychology & Behavioral Science 44:39–57, 2010) correctly pointed out the serious problems of the machine paradigm, and proposed the “organic” view as a new paradigm. But the term “organic” signifying the processes inside the body, is inadequate to express the characteristic of human mind. The recent philosophy of mind suggests that the mind is realized neither only in the brain nor only in the body, but in the whole system of brain-body-environment, namely, in the “extended mind”. The characteristic of human mind resides in the interaction with the mediating tools, artifacts, and the humanized environment. We should propose an “extended mind approach” or an “ecological approach to humanized environment” as a new paradigm for a psychology.     

Changes in brain tryptophan metabolism elicited by ageing, social environment, and psychological stress in mice

The kynurenine (KYN) pathway, which is initiated by indoleamine 2,3-dioxygenase (IDO), is a tryptophan (TRP) metabolic pathway. It shares TRP with the serotonin (5-hydroxytryptamine, 5-HT) pathway. In major depression, activation of the KYN pathway may deplete 5-HT. In the present study we investigated the influence of various risk factors for depression, such as ageing, social isolation and psychological stress, on TRP metabolism. Male ICR mice (postnatal day, PND, 21) were divided into two housing conditions, isolation and group housing, reared for 4 weeks (young adult) or 5 months (adult) and exposed to novelty stress. We measured TRP, KYN and 5-HT contents in the prefrontal cortex, hippocampus, amygdala and dorsal raphe nuclei to investigate the balance between the KYN and 5-HT pathways. Ageing decreased TRP and KYN and increased 5-HT. Thus, ageing shifted the balance to the latter. In the younger group, social isolation decreased TRP and KYN and increased the 5-HT/TRP ratio, whereas novelty stress increased TRP and KYN and decreased the 5-HT/TRP ratio. Thus, social isolation shifted the balance to the latter, whereas novelty stress shifted it to the former. In the older group, these effects were restricted to specific brain regions. Ageing and social isolation counteracted novelty stress effects on TRP metabolism.     

Personality Change in Middle Adulthood: With Focus on Differential Susceptibility

Abstract

Little attention has been paid to middle adulthood in research on personality stability and change. In addition, previous research on individual differences in personality change has not fully explained its variability. This study focused on the differential susceptibility model, which suggests that individual susceptibility interacts with environmental factors and produces variability in outcomes, and investigated individual differences in personality change with a middle adult sample. A total of 1051 Japanese middle adults (M?=?41.61?years; SD = 5.31; range 30–50?years; 534 females) participated in this two-wave short-term longitudinal study. Latent change score model analyses revealed substantial mean-level declines in Agreeableness and Honesty–Humility. Moreover, the results showed that the influences of some life events on personality change are moderated for better and for worse by individual susceptibility to one’s environment. These findings suggest that the trends of personality development may differ between Western and non-Western countries and that differential susceptibility model may play an important role in deriving individual differences in personality stability and change.     

Struktur und Genesis der Fremderfahrung bei Edmund Husserl

Zusammenfassung  In seiner Fünften Cartesianischen Meditation entwickelt Husserl eine transzendentale Theorie der Fremderfahrung, der sogenannten ,,Einfühlung“. Diese Theorie charakterisiert er in dieser Schrift als ,,statische Analyse“. Genau besehen werden darin jedoch mehrere genetische Momente der Fremderfahrung in Betracht gezogen. In diesem Aufsatz versucht der Verfasser, zuerst aufgrund einiger nachgelassener Texte Husserls die wesentlichen Charaktere der statischen und der genetischen Methode und auch den Zusammenhang der beiden festzustellen, um dann aus der Analyse der Fünften Meditation die statischen und die genetischen Momente konkret herauszuarbeiten. Aus dieser Untersuchung wird deutlich, dass die Theorie der Fremderfahrung in der Fünften Meditation als statische Analyse angesehen werden kann, insofern sie die ,,Fundierungsstruktur“ der Fremderfahrung kl?rt. Es ergibt sich aber auch, dass sie bereits in die genetische Sph?re eingetreten ist, sofern sie durch den ,,Abbau“ der h?heren Sinnesschicht der Fremderfahrung die primordiale Eigenheitssph?re als Unterschicht freilegt, und wenn sie dann versucht, von dieser Eigenheitssph?re her die h?here Konstitution des fremden Leibes und des alter ego durch die ,,paarende Assoziation“ als ,,passive Genesis“ aufzukl?ren. Dieser halb-genetischen Theorie fehlt jedoch ein weiteres notwendiges Verfahren der genetischen Methode (das der Rückfrage nach der ,,Urstiftung“), das überprüfen soll, ob und wie alle zur primordialen Sph?re geh?rigen Sinne (,,mein Leib“, ,,mein Menschen-Ich“ usw.) wirklich ohne konstitutive Leistungen der auf fremde Subjektivit?t bezogenen Intentionalit?t “urgestiftet” werden k?nnen. Einige Stellen der Fünften Meditation weisen darauf hin, dass eine solche Urstiftung unm?glich w?re. In der Tat hat der sp?te Husserl seine ehemalige Konzeption, die die statische Fundierungsabfolge zugleich als notwendiges genetisches Nacheinander auffasste, revidiert.

Tetsuya SakakibaraEmail: