Effects of environmental enrichment on spatial memory and neurochemistry in middle-aged mice

The present study compared the effects of environmental enrichment on spatial memory, glutamic acid decarboxylase (GAD) activity, and synaptophysin levels in middle-aged male and female mice. Prior to testing, a subset of 18-month-old male and female C57BL/6 mice was housed with two to three toys and a running wheel in the home cage for up to 29 d. Adult mice (7 mo) of both sexes and the remaining middle-aged mice were group (social) housed, but not exposed to enriching objects. After the enrichment period, all mice were tested in a 1-day version of the Morris water maze, in which both spatial and nonspatial memory were assessed. Immediately after testing, the hippocampus and frontoparietal cortex were dissected, and GAD activity and synaptophysin levels were measured. Environmental enrichment reduced the age-related impairment in spatial acquisition and retention; relative to adult social controls, middle-aged enriched mice were unimpaired, whereas middle-aged social controls were impaired. This reduction was similar in middle-aged males and females. Enrichment did not affect cued memory in either sex. Although hippocampal GAD activity was increased by enrichment in males, all other neurochemical measurements were unaffected by enrichment or aging in either sex. These data suggest that environmental enrichment initiated at middle age can reduce age-related impairments in spatial memory in males and females, although the underlying neurobiological mechanisms of this effect remain unknown.     

Timed picture naming: Extended norms and validation against previous studies

Factors affecting word retrieval were compared in a timed picture-naming paradigm for 520 drawings of objects. In prior timed and untimed studies by Snodgrass and Vanderwart (1980) and Snodgrass and Yuditsky (1996), concerns were raised that participants could not reliably name large numbers of items in a single session. We show that reliable results are obtained in a single session for 520 items and validate our method against previous findings by Snodgrass and colleagues for overlapping items. For these items, comparable levels of name agreement and latency are obtained, and we replicate effects of length, frequency, both objective and subjective age of acquisition, and visual complexity on reaction time (RT) and name agreement measures. Name agreement is unaffected by order of presentation, although there is a gradual increase in RTs across the session, requiring use of multiple random orders. Current extensions of our method include cross-linguistic, bilingual, developmental, and neuropsychological studies and comparisons of action naming and object naming.     

Training Japanese listeners to identify English /r/and /l/: Long-term retention of learning in perception and production

Previous work from our laboratories has shown that monolingual Japanese adults who were given intensive high-variability perceptual training improved in both perception and production of English /r/-/l/ minimal pairs. In this study, we extended those findings by investigating the long-term retention of learning in both perception and production of this difficult non-native contrast. Results showed that 3 months after completion of the perceptual training procedure, the Japanese trainees maintained their improved levels of performance on the perceptual identification task. Furthermore, perceptual evaluations by native American English listeners of the Japanese trainees’ pretest, posttest, and 3-month follow-up speech productions showed that the trainees retained their long-term improvements in the general quality, identifiability, and overall intelligibility of their English /r/-/l/ word productions. Taken together, the results provide further support for the efficacy of high-variability laboratory speech sound training procedures, and suggest an optimistic outlook for the application of such procedures for a wide range of “special populations.” nt]mis|This work was supported by NIDCD Training Grant DC-00012 and by NIDCD Research Grant DC-00111 to Indiana University.     

An examination of the effects of adult age on explicit and implicit learning of figural sequences

Memory for previously learned figural sequences and item-to-item covariations within figural sequences was examined under explicit and implicit instructional conditions in three age groups: young adults (17-23 years); middle-aged adults (35-45 years); and older adults (55-65 years). In Phase 1 of the experiment, the acquisition phase, half the subjects in each age group learned sequences of three to eight items in which the item-to-item changes conformed to an artificial grammar, and the other half of the subjects in each age group learned strings in which the item-to-item changes were nongrammatical. In Phase 2, the implicit/explicit test phase, subjects made forced-choice judgments about parts of the strings that they learned in Phase 1, under either explicit or implicit instructions. Analyses of Phase 2 data revealed that subjects in both instructional conditions used item-to-item covariations in making decisions about grammatical strings. However, use of previously learned covariations as well as the number of correct judgments about previously learned strings was greater in the explicit condition than in the implicit condition. An age-related deficit was found for explicit recognition of grammar-following sequences.     

初中生英语学业成绩影响因素的因果模型

采用英语自我效能、英语学习焦虑、英语学习策略问卷,测量研究213名初中生英语自我效能、英语学习焦虑、英语学习策略与英语学业成绩之因果关系模型。结果表明：（1）初中女生英语学习焦虑显著低于男生;（2）初中生性别、自我效能、活用策略对英语学业成绩有显著回归效应,自我效能是性别影响英语学业成绩的中介变量;（3）初中生英语自我效能与学习策略构成因果-反馈关系且对英语学业成绩有显著回归效应;（4）初中生英语自我效能是英语学习焦虑对英语学业成绩产生消极效应的中介变量．并与英语学习焦虑构成因果-反馈关系;（5）初中生英语学习策略与英语自我效能共同对英语学习焦虑构成多级链式因果-反馈关系。     

Social cohesion predicts COVID-19 vaccination intentions and uptake

COVID-19 vaccination is widely regarded as an individual decision, resting upon individual characteristics and demographic factors. In this research, we provide evidence that psychological group membership, and more precisely, social cohesion—a multidimensional concept that encompasses one's sense of connectedness to, and interrelations within, a group—can help us understand COVID-19 vaccination intentions (Study 1) and uptake (Study 2). Study 1 is a repeated-measures study with a representative sample of 3026 Australians. We found evidence that social cohesion can be conceptualised as a multidimensional structure; moreover, social cohesion at Wave 1 (early in the COVID-19) predicted greater vaccination intention and lower perceived risk of vaccination at Wave 2 (4 months later). In Study 2 (a cross-sectional study, N = 499), the multidimensional structure of social cohesion was associated with greater uptake of vaccine doses (in addition to willingness to receive further doses and perceived risk of the vaccine). These relations were found after controlling for a series of demographic (i.e., sex, age, income), health-related factors (i.e., subjective health; perceived risk; having been diagnosed with COVID-19), and individual differences (political orientation, social dominance orientation, individualism). These results demonstrate the need to go beyond individual factors when it comes to behaviours that protect groups, and particularly when examining COVID-19 vaccination—one of the most important ways of slowing the spread of the virus.     

The Romanian Pentecostal Agency for Foreign Mission (APME): A Case Study in Cross‐Cultural Mission Originating from Eastern Europe

This paper offers a short analysis of the ecclesiological and missiological context that led to the establishment of the Romanian Pentecostal Agency for Foreign Mission (APME). It states the main steps in the process of the development of the organization in its first decade of existence (2006–2016), during which it became one of the youngest and most dynamic missionary structures in Europe. It describes the process of the birth of APME and the important role the founding team played in the existence of the agency and in articulating the mission, vision, values, and work philosophy. The main section will present the components of APME's work strategy which led to implementing the vision and reaching the objectives: mobilizing the churches, recruiting, training, sending, supporting missionaries, and promoting the ministry. A short section will show the crucial importance of internal and foreign partnerships in the activity of APME. In the final part we will list the main lessons learned in the ten years of APME's existence that can be shared with other mission organizations, as well as the challenges that the organization faces over the next few years.     

Menstrual Knowledge and Taboo TV Commercials: Effects on Self-Objectification among Italian and Swedish Women

Despite menstruation being a physiological phenomenon in women’s life, social research has highlighted that there are still many taboos, also conveyed by advertising, which prevent an open discourse on the topic and can have negative impacts on women’s well-being. The present study examined the influence of the exposure to existing TV advertisements for sanitary napkins depicting menstruation as a taboo on self-objectification in women from Italy (n = 160) and Sweden (n = 159). To do so, we also investigated the moderating role of menstrual knowledge in this relationship. Our findings showed that in the Italian sample, exposure to the taboo TV commercial led to more self-objectification especially for participants with lower knowledge of menstruation. These effects did not occur for their Swedish counterparts, showing no differences in self-objectification when women were exposed to the taboo advertisement. The present results are discussed in light of cultural differences in sexual and menstrual education between the two countries. Theoretical and practical implications are drawn.