陷入混沌

当我还是物理系的学生时，我的大部分时间都用在研究子虚乌有的东西上，诸如无摩擦力的滑轮、无质量的弹簧以及不随高度而变的重力等。科学家们早应意识到，真实的系统与其环境之间存在着一些难于进行实际测量的相互作用，而随着时间的推移这些效应就逐渐积累起来，因此我们知道，理想的解法仅能在一定的时间内描述系统。而我们所不知道的则是这一段时间可能有多短。     

世界末日的忧伤

病毒横行，环境灾难，灰雾蔓延——天文学家Martin Rees爵士预测，人类文明在这种种祸害的围攻之下熬到二十二世纪的机会只有50％。     

The disease burden of childhood adversities in adults: a population-based study

Objectives

There is much evidence showing that childhood adversities have considerable effects on the mental and physical health of adults. It could be assumed therefore, that the disease burden of childhood adversities is high. It has not yet been examined, however, whether this is true.

Method

We used data of a large representative sample (N = 7,076) of the general population in the Netherlands. We calculated the disability weight (DW) for each respondent. The DW is a weight factor that reflects the severity of a disease or condition on a scale from 0 (perfect health) to 1 (equivalent to death). We used an algorithm based on the SF-6D to estimate DW. Because the DW indicates the proportion of a healthy life year that is reduced by the specific health state of the individual, it also possible to calculate the total number of years lost due to disability (YLD) in the population. We calculated the years lived with disability (YLD) for 9 different childhood adversities (in the areas of parental psychopathology; abuse and neglect; major life events), as well as for major categories of mental disorders and general medical disorders.

Results

All 9 adversities resulted in a significantly increased DW, except death of a parent before the age of 16. Adversities in the category of abuse and neglect are associated with the highest DWs (0.057), followed by parental psychopathology (0.031) and life events during childhood (0.012). All adversities (46.4% of the population reports one or more adversity) are associated with 20.7 YLD/1,000, which is more than all mental disorders together (12.9 YLD/1,000). The category of abuse/neglect has the highest YLD/1,000 (15.8), which is also higher than all mental disorders together. Adjustment for the presence of mental and general medical disorders resulted in comparable outcomes.

Conclusions

Childhood adversities are more important from a public health point of view than all common mental disorders together, and should be a priority for public health interventions.     

Emotion recognition in fathers and mothers at high-risk for child physical abuse

Objective

The present study was designed to determine whether parents at high risk for physical child abuse, in comparison with parents at low risk, show deficits in emotion recognition, as well as to examine the moderator effect of gender and stress on the relationship between risk for physical child abuse and emotion recognition.

Methods

Based on their scores on the Abuse Scale of the CAP Inventory (Milner, 1986), 64 parents at high risk (24 fathers and 40 mothers) and 80 parents at low risk (40 fathers and 40 mothers) for physical child abuse were selected. The Subtle Expression Training Tool/Micro Expression Training Tool ( [Ekman, 2004a] and [Ekman, 2004b]) and the Diagnostic Analysis of Nonverbal Accuracy II (Nowicki & Carton, 1993) were used to assess emotion recognition.

Results

As expected, parents at high risk, in contrast to parents at low risk, showed deficits in emotion recognition. However, differences between high- and low-risk participants were observed only for fathers, but not for mothers. Whereas fathers at high risk for physical child abuse made more errors than mothers at high risk, no differences between mothers at low risk and fathers at low risk were found. No interaction between stress, gender, and risk status was observed for errors in emotion recognition.

Conclusions and practice implications

The present findings, if confirmed with physical abusers, could be helpful to further our understanding of deficits in processing information of physically abusive parents and to develop treatment strategies specifically focused on emotion recognition. Moreover, if gender differences can be confirmed, the findings could be helpful to develop specific treatment programs for abusive fathers.     

Children's disclosures of sexual abuse: learning from direct inquiry

Objectives

Published protocols for forensic interviewing for child sexual abuse do not include specific questions about what prompted children to tell about sexual abuse or what made them wait to tell. We, therefore, aimed to: (1) add direct inquiry about the process of a child's disclosure to a forensic interview protocol; (2) determine if children will, in fact, discuss the process that led them to tell about sexual abuse; and (3) describe the factors that children identify as either having led them to tell about sexual abuse or caused them to delay a disclosure.

Methods

Forensic interviewers were asked to incorporate questions about telling into an existing forensic interview protocol. Over a 1-year period, 191 consecutive forensic interviews of child sexual abuse victims aged 3-18 years old in which children spoke about the reasons they told about abuse or waited to tell about abuse were reviewed. Interview content related to the children's reasons for telling or for waiting to tell about abuse was extracted and analyzed using a qualitative methodology in order to capture themes directly from the children's words.

Results

Forensic interviewers asked children about how they came to tell about sexual abuse and if children waited to tell about abuse, and the children gave specific answers to these questions. The reasons children identified for why they chose to tell were classified into three domains: (1) disclosure as a result of internal stimuli (e.g., the child had nightmares), (2) disclosure facilitated by outside influences (e.g., the child was questioned), and (3) disclosure due to direct evidence of abuse (e.g., the child's abuse was witnessed). The barriers to disclosure identified by the children were categorized into five groups: (1) threats made by the perpetrator (e.g., the child was told (s)he would get in trouble if (s)he told), (2) fears (e.g., the child was afraid something bad would happen if (s)he told), (3) lack of opportunity (e.g., the child felt the opportunity to disclose never presented), (4) lack of understanding (e.g., the child failed to recognize abusive behavior as unacceptable), and (5) relationship with the perpetrator (e.g., the child thought the perpetrator was a friend).

Conclusions

Specific reasons that individual children identify for why they told and why they waited to tell about sexual abuse can be obtained by direct inquiry during forensic interviews for suspected child sexual abuse.

Practice implications

When asked, children identified the first person they told and offered varied and specific reasons for why they told and why they waited to tell about sexual abuse. Understanding why children disclose their abuse and why they wait to disclose will assist both professionals and families. Investigators and those who care for sexually abused children will gain insight into the specific barrier that the sexually abused child overcame to disclose. Prosecutors will be able to use this information to explain to juries why the child may have delayed his or her disclosure. Parents who struggle to understand why their child disclosed to someone else or waited to disclose will have a better understanding of their child's decisions.     

Changes in the prevalence of child sexual abuse, its risk factors, and their associations as a function of age cohort in a Finnish population sample

Objective

We examined (1) the prevalence of childhood sexual abuse (CSA) experiences as a function of cohort and gender, (2) the prevalence of factors associated with CSA as a function of cohort and whether the association of these factors with CSA remained the same irrespective of cohort, and (3) whether any cohort differences could be explainable by cohort differences in reporting bias.

Method

We used the responses of 4,561 men (M = 29, SD = 7 years) and 8,361 female (M = 29, SD = 7 years) Finnish participants who responded to the Childhood Trauma Questionnaire-Short Form as well as questions regarding family structure.

Results

The prevalence of CSA experiences varied between 0.7-4.6% for men and 1.8-7.5% for women depending on the item. Younger cohorts reported less CSA as well as less of the risk factors (physical neglect and abuse, emotional neglect and abuse, parental substances abuse, not growing up with both biological parents) that were positively associated with the likelihood of CSA. The effects of these risk factors did not vary as a function of the cohort. Also, the declining trend was not explainable by social desirability being higher in the younger cohorts.

Conclusions

The results suggest that there is a real decline in the prevalence of CSA and it is associated with a simultaneous decline in factors associated with CSA.     

Neuromuscular control and running economy is preserved in elite international triathletes after cycling

Running is the most important discipline for Olympic triathlon success. However, cycling impairs running muscle recruitment and performance in some highly trained triathletes; though it is not known if this occurs in elite international triathletes. The purpose of this study was to investigate the effect of cycling in two different protocols on running economy and neuromuscular control in elite international triathletes. Muscle recruitment and sagittal plane joint angles of the left lower extremity and running economy were compared between control (no preceding cycle) and transition (preceded by cycling) runs for two different cycle protocols (20-minute low-intensity and 50-minute high-intensity cycles) in seven elite international triathletes. Muscle recruitment and joint angles were not different between control and transition runs for either cycle protocols. Running economy was also not different between control and transition runs for the low-intensity (62.4 +/- 4.5 vs. 62.1 +/- 4.0 ml/min/kg, p > 0.05) and high-intensity (63.4 +/- 3.5 vs. 63.3 +/- 4.3 ml/min/kg, p > 0.05) cycle protocols. The results of this study demonstrate that both low- and high-intensity cycles do not adversely influence neuromuscular control and running economy in elite international triathletes.