Associative memory or algorithmic search: a comparative study on learning strategies of bats and shrews

Two common strategies for successful foraging are learning to associate specific sensory cues with patches of prey ("associative learning") and using set decision-making rules to systematically scan for prey ("algorithmic search"). We investigated whether an animal's life history affects which of these two foraging strategies it is likely to use. Natterer's bats (Myotis nattereri) have slow life-history traits and we predicted they would be more likely to use associative learning. Common shrews (Sorex araneus) have fast life-history traits and we predicted that they would rely more heavily on routine-based search. Apart from their marked differences in life-history traits, these two mammals are similar in body size, brain weight, habitat, and diet. We assessed foraging strategy, associative learning ability, and retention time with a four-arm maze; one arm contained a food reward and was marked with four sensory stimuli. Bats and shrews differed significantly in their foraging strategies. Most bats learned to associate the sensory stimuli with the reward and remembered this association over time. Most shrews searched the maze using consistent decision-making rules, but did not learn or remember the association. We discuss these results in terms of life-history traits and other key differences between these species. Our results suggest a link between an animal's life-history strategy and its use of associative learning.     

Experience of Parental Marital Dissolution Earlier in Life and the Disposition to Forgive Among Older Violent and Non-Violent Prisoners

The purpose of this study was to examine differences in self-reported dispositional forgiveness types among older male prison inmates who experienced parental separation/divorce earlier in life. Participants included a sample of N = 261 incarcerated men, aged 45 and older, residing in state-managed prisons in Oklahoma. IBM/SPSS 22.0 was used to examine mean differences across forgiveness of self, situation, and others. Significant mean differences were evident only for forgiveness of situation. In particular, significant differences emerged relative to depressive affect F (1, 192) = 19.90, p < .001, and social support F (1, 192) = 18.64, p < .001. After controlling for age, race, religiosity, depression, social support, perceived health, crime type, and parental separation/divorce, one significant interaction (crime type X parental separation/divorce) emerged, F (1, 192) = 4.42, p < .05. It appears that the disposition to forgive the situation among older prison inmates depends on criminal offender type as well as whether the older inmate experienced parental dissolution earlier in life. Implications for pastoral counseling programing and forgiveness therapy treatment for older male prison inmates who experienced parental separation/divorce earlier in life are discussed.     

Stress and Alcohol,Cigarette, and Marijuana Use Among Latino Adolescents in Families with Undocumented Immigrants

Families in which one or more members are undocumented immigrants experience unique hardships. Yet, little is known about stress and substance use among adolescents growing up in these families. The present study examined associations between two sources of adolescent stress (i.e., low parental involvement due to contextual constraints and family economic insecurity) and lifetime alcohol, cigarette, and marijuana use among adolescents in families with undocumented members. The sample was comprised of 102 adolescents (10–18 years old) and one of his or her parents. Participants responded a survey in English or Spanish. Adolescent lifetime use of alcohol, cigarette, and marijuana was 51, 32.4, and 37.3 %, respectively. Chi-square analyses found no significant gender differences in lifetime substance use. Logistic regression models showed that adolescent stress due to hindered parental involvement increased the odds of both lifetime cigarette and marijuana use after controlling for gender, age, linguistic acculturation, familism, parental control, and negative peer affiliation. Being a girl increased the odds of lifetime alcohol use. Family economic stress was not associated with lifetime substance use. Results suggest that hindered parental involvement might be a stressor and a risk factor for cigarette and marijuana use among adolescents growing up in families with undocumented members. Because parents in these families are likely to be undocumented, policies that allow immigrants to apply for legal status could improve parents’ working conditions and facilitate parental involvement; in turn, such policies could decrease the risk for adolescent substance use among children of Latino immigrants.     

Emotion und Psychotherapie

Considering the fact that all psychic disturbances are emotional disturbances as well, we develop based on our research on the modular structure of the emotional system a systematisation of the disturbance-specific concatenation of these modules within the patient’s social relationships. Subsequently, we discuss treatment possibilities and contraindications for each clinical empirically validated constellation. We describe a fundamental mechanism of affect induction keeping the disturbances alive and transporting them to the next generation. We conclude in stating that treatment recommendations focusing on a standard algorithm of handling the emotions system fail because there is no general indication for such enterprises.     

Testpsychologische Ansätze der Beschwerdenvalidierung

The presence of cognitive impairment has been documented for a large number of diseases, conditions and mental disorders. Due to their impact on functioning in professional life and in everyday activities, there appears to be an increasing demand of qualified neuropsychological examinations in civil forensic contexts. While neuropsychological testing is the method of choice for determining the presence and the profile of cognitive impairment, it is easy to underperform in such tests. The authenticity of test results has to be thoroughly checked using modern approaches of symptom validity assessment. Without adequate validity checks, forensic psychological examinations are incomplete.     

A review of online social networking profiles by adolescents: implications for future research and intervention

This study explored content posted and interactions taking place on adolescent online social networking profiles. Although "blogging" continues to soar in popularity, with over half of teenagers online participating in some form, little research has comprehensively explored blog communication within the context of adolescent development. Content was qualitatively coded from 100 randomly selected profiles authored by adolescents between the ages of 16 and 18. Rich thematic elements were identified including family and social issues, risk behaviors, disclosure of personally identifiable information, and frequent peer interaction. Results indicate adolescent blogs frequently contain appropriate images, positive comments about parents and peers, athletics, a variety of risk behaviors, and sexual and profane language. In addition, school type was examined (public versus private, religious) as a potential factor in understanding the differences in content posted by adolescents; however, no significant differences were found. Implications for parental monitoring and intervention are discussed as well as direction for future research. Adolescents' online profiles contain a wealth of intimate, candid, and publicly available information on a wide range of social issues pertinent to adolescence that contribute to the understanding of adolescent development and well-being.     

Adolescents’ Perceptions of Family Connectedness,Intrinsic Religiosity,and Depressed Mood

Using a sample of 248 ninth and tenth grade students at public high schools, we examined adolescents’ perceptions of family connectedness, intrinsic religiosity, and adolescents’ gender in relation to depressed mood and whether intrinsic religiosity and gender moderated the association of aspects of family connectedness to adolescent depressed mood. Using hierarchical multiple regression analyses we tested models separately for three forms of family connectedness (overall family cohesion, mothers’ support, and fathers’ support), intrinsic religiosity, and depressed mood. In each model, family connectedness was negatively associated with depressed mood. Intrinsic religiosity was not significantly associated with depressed mood. However, in the mothers’ support model, both a two-way interaction (mothers’ support × intrinsic religiosity) and a three-way interaction (adolescents’ gender × mothers’ support × intrinsic religiosity) were significantly related to depressed mood. In the two-way interaction, higher intrinsic religiosity was a moderator, strengthening the association between mothers’ support and depressed mood. In the three-way interaction, gender differences were found. For boys, high intrinsic religiosity strengthened the association between mothers’ support and depressed mood. Among girls, when mothers’ support was low, intrinsic religiosity provided an additional source of connectedness in protecting against depressed mood. Our findings show that connectedness in overall family systems, mother–adolescent subsystems, and father–adolescent subsystems are all important to emotional resilience in adolescents by protecting against depressed mood. Future studies of adolescent religiosity may benefit from including diverse forms of family connectedness in understanding the protective processes provided by aspects of religiosity in promoting adolescents’ emotional resilience.     

The Carroll Scale for Depression--the German version and validation

The Carroll Rating Scale for Depression, first published by Carroll et al. in 1981, has been translated into German. 28 out-patients and a control-group of 28 normals were submitted to the CRS and, for purposes of validation, to the BECK scale and the diagram HARD. The Carroll Rating Scale is directly based on the Hamilton Rating Scale, but, in contrast, it represents a self rating that should be useful for longitudinal studies.     

The effects of a task-irrelevant visual event on spatial working memory

In the present experiment, we investigated whether the memory of a location is affected by the occurrence of an irrelevant visual event. Participants had to memorize the location of a dot. During the retention interval, a task-irrelevant stimulus was presented with abrupt onset somewhere in the visual field. Results showed that the spatial memory representation was affected by the occurrence of the external irrelevant event relative to a control condition in which there was no external event. Specifically, the memorized location was shifted toward the location of the task-irrelevant stimulus. This effect was only present when the onset was close in space to the memory representation. These findings suggest that the “internal” spatial map used for keeping a location in spatial working memory and the “external” spatial map that is affected by exogenous events in the outside world are either the same or tightly linked.     

Psychologische Mess- und Testverfahren

The use of psychological assessment methods is flawed by incorrect assumptions of their capacity. Some of these assumptions are discussed. It is argued that psychological tests are necessary to expand the database for expert reports about the impact of mental disorders on work and different levels of functioning. Tests help to protect psychological assessments against errors and chance bias. With respect to levels of functioning, examples of German tests and questionnaires are given. Test-based information requires objective validation methods and should not be subordinated to an intuitive assessment strategy.