Temporal focus and time spatialization across cultures.

The temporal focus hypothesis (TFH) proposes that whether the past or the future is conceptualized as being located in front depends on temporal focus: the balance of attention paid to the past (tradition) and the future (progress). How general is the TFH, and to what extent can cultures and subcultures be placed on a single line relating time spatialization and temporal focus in spite of stark differences in language, religion, history, and economic development? Data from 10 Western (sub)cultural groups (N = 1198,) were used to derive a linear model relating aggregated temporal focus and proportion of future-in-front responses. This model then successfully fitted 10 independently collected (sub)cultural groups in China and Vietnam (N = 899). Further analysis of the whole data set (N = 2,097) showed that the group-level relation arose at the individual level and allowed precise quantification of its influence. Finally, in an effort to apply the model to all relevant published data sets, we included recent data from Britain and South Africa: The former, but not the latter, fitted the model well. Temporal focus is a central factor that shapes how people around the world think of time in spatial terms.

Isometric muscle fatigue of the paravertebral and upper extremity muscles after whiplash injury.

BACKGROUND: Whiplash-associated disorders (WAD) result from injury of neck structures that most often occur during traffic accidents as a result of rapid acceleration-deceleration. The dominant symptoms manifest in the musculoskeletal system and include increased fatigue. Because of the frequency of whiplash injuries, a simple, cheap and useful diagnostic tool is needed to differentiate whiplash injury from healthy patients or those faking symptoms. OBJECTIVES: To determine muscle fatigue in patients with whiplash injury in six body positions. DESIGN: Analytical cross-sectional study. SETTING: Emergency center, university hospital. PATIENTS AND METHODS: We studied patients with whiplash injury from vehicular traffic accidents who presented to the emergency center within 6 hours of sustaining the injury. We determined whiplash injury grade according to the Quebec Task Force (QTF) classification and measured isometric muscle endurance in six different body positions. Control subjects for each patient were matched by age, gender and anthropomorphic characteristics. Cut-off values were determined to distinguish patients with whiplash injury from controls and for determination of injury grade . MAIN OUTCOME MEASURE(S): QTF grade, time to muscle fatigue in seconds. RESULTS: From September 2013 to September 2016, we enrolled 75 patients with whiplash injury and 75 matching control subjects. In all six positions, the patients with whiplash injury felt muscle fatigue faster than equivalent controls (P < .05) and the time to onset of muscle fatigue decreased with increasing injury grades in all six positions. Assignment to the patient or control group and to injury grade could be predicted with more than 90% accuracy on the basis of time to muscle fatigue. The most efficient position was the highest injury grade, by which 99.9% of the patients were accurately categorized. Isometric muscle endurance correlated with whiplash injury grade in all six positions (P < .01). CONCLUSION: Under clinical conditions, muscle endurance and the appearance of isometric muscle fatigue during testing can be a useful indicator of whiplash injury and grade. LIMITATIONS: The size of the sample was small. An objective parameter such as electromyography is needed to confirm isometric muscle fatigue.

The relationship between difficulties in psychological adjustment in young adulthood and exposure to bullying behaviour in childhood and adolescence.

OBJECTIVE: This study investigates the relationship between involvement in bullying in childhood and adolescence and psychological difficulties in young adulthood. MATERIALS AND METHOD: A total of 249 college students completed the Retrospective Bullying Questionnaire and Trauma Symptom Checklist. RESULTS: The results showed significant differences in psychological adjustment among respondents who were exposed to bullying compared to respondents who were not exposed to bullying. Those exposed to bullying had significantly higher levels of anxiety, depression, sleeping problems, and dissociative and traumatic symptoms compared to those who were not exposed to bullying. Respondents who were exposed to bullying in all three examined periods (the period from the first to fourth grade, the period from the fifth to eighth grade and the high school period) had higher scores on the subscale of dissociative symptoms and sexual trauma symptoms compared to respondents who were exposed through one or two periods. Victims abused in all three periods have more symptoms of anxiety and sleeping problems compared to the subjects exposed to bullying during one examination period. There were no differences in the level of depressive symptoms and sexual problems regarding the duration of bullying. Also, there were no differences in psychological adjustment between respondents who were bullied during one specific period. CONCLUSION: Bullying experiences in childhood and adolescence are connected with difficulties in psychological adjustment in young adulthood.