Search results for "stages"
showing 10 items of 217 documents
Mediterranean Diplodus annularis (Teleostei: Sparidae) and its brain parasite: Unforeseen outcome
2005
Patterns of parasite load and aggregation of the bird trematode Cardiocephaloides longicollis in its main intermediate host in the Mediterranean, the annular sea bream, Diplodus annularis, were studied in a large sample collected off Valencia (Spain) and are discussed within the context of the parasite induced host mortality hypothesis. The metacercariae were located within large composite cysts of host origin in the ventricles of the optic lobes of the cerebrum. A weak immunological response was detected in older fish, which was significantly associated with the total parasite load. Although the mean abundance of C. longicollis showed a tendency to increase with host size, the infection le…
Change in ego development, coping, and symptomatology from adolescence to emerging adulthood
2015
Abstract In a 10-year longitudinal study, the developmental course of internalizing and externalizing symptoms was investigated in a group of 98 individuals who exhibited different ego development trajectories from adolescence into emerging adulthood. This study explored whether an increase or a decrease in psychopathological symptomatology was associated with different ego development progressions in conjunction with the use of certain coping behaviors. In general, the study revealed that increases in ego development and the use of adaptive coping behavior were associated with a decrease in symptomatology over time. Ego developmental trajectories with a very steep progression were linked w…
Motivation and Mathematics Performance: A Longitudinal Study in Early Educational Stages
2017
Abstract This longitudinal study analyses the predictive value of a set of motivational variables on academic performance in the mathematics area. Analyses were performed on a sample of 180 children, with the data evaluated in two stages in formal educational settings (from kindergarten until 2nd year of Primary School). Likewise, differences between three groups (with low, average, and high mathematical performance at the end of second year of Primary School) in motivational and attributional variables assessed initially are also studied. The results show a significant predictive power on later mathematics achievement for self-perceived competence. Also persistence, attitude, and positive …
Does Identity Precede Intimacy? Testing Erikson's Theory on Romantic Development in Emerging Adults of the 21st Century
2010
Erikson stated that healthy identity development during adolescence is a precursor of intimacy in romantic relationships during emerging adulthood. However, from a developmental contextual perspective, there are reasons to question this strict developmental ordering. Using interview and questionnaire data from a longitudinal study on 93 adolescents, the authors tested whether ego development in middle adolescence predicts intimacy in emerging adulthood. Second, the authors examined whether identity achievement at the transition to adulthood mediates this link. Results revealed direct links between early ego development (age 15) and intimacy in romantic relationships (age 25). No paths were…
Self-esteem: An antecedent or a consequence of social support and psychosomatic symptoms? Cross-lagged associations in adulthood
2008
Abstract This study investigated the relationships of self-esteem with social support and psychosomatic symptoms in cross-lagged longitudinal data with two measurement points and a time lag of 6 years. Two hundred thirteen participants were drawn from the ongoing Jyvaskyla Longitudinal Study of Personality and Social Development, Finland. The present study focused on data collected by questionnaires at ages 36 and 42. The cross-lagged analyses of Structural Equation Modeling (SEM) indicated that high self-esteem at age 36 predicted high social support 6 years later and simultaneously, but to a lesser extent, high social support at age 36 predicted high self-esteem at age 42. In addition, lo…
A Longitudinal Study on Social Development as an Impetus for School Reform Toward an Integrated School Day
2004
The Jyväskylä Longitudinal Study of Personality and Social Development, in which the same individuals have been studied from the age of 8 to age 42, has warranted the conclusion that children should be encouraged toward prosocial development at an early age, because it helps them to integrate into the school environment and saves them from the cycle of maladaptation. A project was designed at the invitation of a Finnish parliamentary group for the enhancement of children's socioemotional development at school. The project comprises seven subprojects including interventions at three levels: the child's behavior, school as a learning environment, and the school's relationships with the surro…
Youthful smoking and drinking in a longitudinal perspective.
1982
The incidence and continuity of smoking and drinking, precursory social-behavioral characteristics of smokers and drinkers, and life conditions related to smoking and drinking are described. The study was part of an extensive Finnish longitudinal study of social development, the original sample of which consisted of 8-year-old subjects (196 boys, 173 girls) studied in 1968 by employing peer nomination and teacher ratings. The follow-up studies were made at ages 14 and 20. 154 Ss at age 14 and 135 Ss at age 20 were interviewed about their smoking and drinking habits, among others. The results showed that about 20% of the subjects smoked at age 14 and about 30% at age 20. The proportion of ab…
An Automatic Sleep Scoring Toolbox : Multi-modality of Polysomnography Signals’ Processing
2019
Sleep scoring is a fundamental but time-consuming process in any sleep laboratory. To speed up the process of sleep scoring without compromising accuracy, this paper develops an automatic sleep scoring toolbox with the capability of multi-signal processing. It allows the user to choose signal types and the number of target classes. Then, an automatic process containing signal pre-processing, feature extraction, classifier training (or prediction) and result correction will be performed. Finally, the application interface displays predicted sleep structure, related sleep parameters and the sleep quality index for reference. To improve the identification accuracy of minority stages, a layer-w…
Self and Nature: Parental Socialization, Self-Esteem, and Environmental Values in Spanish Adolescents
2020
Emergent research seriously questions the use of parental strictness as the best parenting strategy in all cultural contexts. Moreover, previous research on environmental socialization offers inconsistent findings about which specific parenting practices would be the most appropriate for environmental socialization. The present paper aims to examine parents&rsquo
Life cycle of Renylaima capensis, a brachylaimid trematode of shrews and slugs in South Africa: two-host and three-host transmission modalities sugge…
2012
Abstract Background The life cycle of the brachylaimid trematode species Renylaima capensis, infecting the urinary system of the shrew Myosorex varius (Mammalia: Soricidae: Crocidosoricinae) in the Hottentots Holland Nature Reserve, South Africa, has been elucidated by a study of its larval stages, epizootiological data in local snails and mammals during a 34-year period, and its verification with mtDNA sequencing. Methods Parasites obtained from dissected animals were mounted in microscope slides for the parasitological study and measured according to standardized methods. The mitochondrial DNA cox 1 gene was sequenced by the dideoxy chain-termination method. Results The slugs Ariostralis …