Different Patterns Of Development Research Articles

Bulimic symptom onset in young girls: A longitudinal trajectory analysis.

To investigate whether there are different patterns of development for binge eating and purging behavior among preadolescent and early adolescent girls, we conducted trajectory analyses of those behaviors in 938 girls across 8 waves of data from the spring of 5th grade (the last year of elementary school) through the spring of 9th grade (the first year of high school). Analyses revealed 4 separate developmental trajectories for binge eating behavior (labeled none, increasing, decreasing, and high steady) and 3 separate developmental trajectories for purging behavior (labeled none, dabble, and increasing). Fifth grade scores on risk factors that were both transdiagnostic (negative affect and negative urgency) and eating disorder specific (expectancies for reinforcement from eating and from thinness) differentiated among the trajectory groups, in some cases before the groups differed in the target behaviors. These findings are the first, to our knowledge, to examine developmental trajectories for bulimic symptom onset in youth as young as elementary school. Clinical implications are discussed.

Cytoplasmic membrane activities during first cleavage of zona-free porcine embryos: description and consequences.

Already at first embryo cleavage subsequent blastocyst formation can be predicted based on morphology but the finer morphological details can be difficult to determine due to the presence of the zona pellucida (ZP). Therefore, we monitored zona-free porcine parthenogenetically activated (PA) embryos in a time-lapse system to: (1) describe and characterise the morphological activity of the cytoplasmic membrane and the distribution to the two nuclei during first cleavage and (2) determine the relationship between specific morphological activities and subsequent embryonic development. After ZP removal the membrane surface activities were clearly visible, so all cleaved embryos could be divided into two groups depending on the surface activity during first cleavage: regular morphology (MN) or irregular morphology with 'bumps' (MB). The two nuclei were more unequal in MB embryos in both nucleus size and DNA quantity. After first cleavage, MB embryos could be further divided into three types of irregularities (MB1, MB2, MB3) based on their subsequent behaviour. Clear differences in developmental patterns were found between MN and MB embryos, such as delayed first cleavage, compromised blastocyst formation and total cell number. The predictive value of these new types of morphological events was comparable to the more traditionally used time of first cleavage. In conclusion, zona-free embryos allow visualisation of finer morphological details that can provide an early prediction of embryo developmental potential, but further studies are needed on other type of embryos.

Different types of multiethnic societies and different patterns of development and change in the prehistoric Near East

After briefly examining the forms of cultural contact in pre- and protohistoric societies in relation to the problem of the varying perception of territories and their “borders” as well as of “membership” in those societies, and after a brief reconsideration of the concept of culture and ethnicity in such archaic contexts, this paper then examines three examples of multiethnic societies in the Near East, and specifically in Upper Mesopotamia and Southeast Anatolia, in the fifth, fourth, and at the beginning of the third millennia before the common era (BCE), respectively. These examples are dealt with as emblematic cases of different models of society, types of interaction with alien groups, levels of integration, and development dynamics. Each of these cases is examined with respect to its socioeconomic context, the archeological evidence of “multiethnicity,” the types of interaction between different components, the degree of cultural integration achieved, and the effects on the dynamics of change and the development of the societies examined. By analyzing and comparing these examples, the paper aims to show how interethnic contact impacted differently on different societies according to their types, the reasons and purposes of the interaction, and the degree of integration achieved.

Independent development of the Reach and the Grasp in spontaneous self-touching by human infants in the first 6 months.

The Dual Visuomotor Channel Theory proposes that visually guided reaching is a composite of two movements, a Reach that advances the hand to contact the target and a Grasp that shapes the digits for target purchase. The theory is supported by biometric analyses of adult reaching, evolutionary contrasts, and differential developmental patterns for the Reach and the Grasp in visually guided reaching in human infants. The present ethological study asked whether there is evidence for a dissociated development for the Reach and the Grasp in nonvisual hand use in very early infancy. The study documents a rich array of spontaneous self-touching behavior in infants during the first 6 months of life and subjected the Reach movements to an analysis in relation to body target, contact type, and Grasp. Video recordings were made of resting alert infants biweekly from birth to 6 months. In younger infants, self-touching targets included the head and trunk. As infants aged, targets became more caudal and included the hips, then legs, and eventually the feet. In younger infants hand contact was mainly made with the dorsum of the hand, but as infants aged, contacts included palmar contacts and eventually grasp and manipulation contacts with the body and clothes. The relative incidence of caudal contacts and palmar contacts increased concurrently and were significantly correlated throughout the period of study. Developmental increases in self-grasping contacts occurred a few weeks after the increase in caudal and palmar contacts. The behavioral and temporal pattern of these spontaneous self-touching movements suggest that the Reach, in which the hand extends to make a palmar self-contact, and the Grasp, in which the digits close and make manipulatory movements, have partially independent developmental profiles. The results additionally suggest that self-touching behavior is an important developmental phase that allows the coordination of the Reach and the Grasp prior to and concurrent with their use under visual guidance.

Dynamics of floret development determining differences in spike fertility in an elite population of wheat

Further increases in wheat yield potential could be achieved through a better understanding of the dynamics of floret primordia generation/degeneration, a process which has received little attention. We quantified genotypic variation among elite genotypes of the CIMCOG panel assembled by CIMMYT for its usefulness for wheat breeding. Ten genotypes, representing the range of variation for yield and its components of the whole panel, were grown under high-yielding conditions in NW Mexico for two growing seasons. The stage of development of floret primordia was determined 2–3 times weekly during stem elongation for apical, central and basal spikelets within the spike. The dynamics of floret initiation/death, and the resulting number of fertile florets, were determined for each spikelet position. We found that the variation in number of fertile florets within this elite germplasm was much more related to the survival of floret primordia than to the maximum number of florets initiated. As the two floret primordia most proximal to the rachis were almost always fertile and most distal florets (florets 6–8) were never fertile, the differences in number of fertile florets were clearly attributed to the differential developmental patterns of intermediate florets (floret primordia 3, 4 and 5, counted from the rachis, depending on the spikelet position). We found significant differences among elite germplasm in dynamics of floret development. Differences in floret survival seemed positively related to those in the length of the period of floret development: the longer the duration of floret development the higher the likelihood of that floret becoming fertile. It is proposed that this type of study may be instrumental for identifying prospective parents for further raising yield potential wheat breeding programmes.

Ovule and female gametophyte development in the Bromeliaceae: an embryological study ofPitcairnia encholirioides

Pitcairnia encholirioides L.B.Sm. is an endangered species endemic to the Brazilian Atlantic Forest. This species exhibits limited flowering, late seed germination, and preference for clonal growth. Because little is known about its life cycle and female gametophyte development, the ovule development, gynosporogenesis, and gynogametogenesis were analysed to advance knowledge of the species’ life cycle and structural alterations during ovule and female gametophyte development. Also, identification of embryological characters contributing to systematics of Pitcairnioideae is relevant. The ovules are anatropous, bitegmic, and crassinucellate, the gynosporogenesis is monosporic, and the female gametophyte is a Polygonum type. Different patterns in development of the integuments, nucellus, chalazal appendage, and micropylar channel indicate the potential of these characters for subfamily systematics. In the filiform apparatus, a range of glycan-directed monoclonal antibodies was used; the filiform exhibited a biphasic structure. While only arabinogalactan proteins (AGPs) occurred in the translucent matrix, mannans were the most prevalent glycan in the denser matrix. These phases may have distinct mechanical or signalling properties, as they showed different cell wall component distributions. The distinct spatial distribution between AGPs and other glycans showed that the filiform apparatus is heterogeneous and has a common polymer assemblage for both synergids.

Knowledge and Belief Understanding Among Iranian and Australian Preschool Children

For more than three decades, considerable research effort has been expended in documenting children’s development of a theory of mind (ToM), or the recognition that behavior is determined by mental states. Studies comparing ToM development in children from Western and non-Western countries have shown differences in patterns of development in various ToM tasks. Specifically, Iranian children are slower than their Australian counterparts to acknowledge that people have diverse beliefs, but at the same time they have relatively advanced understanding of how people acquire new knowledge. In the current study, our aim was to further investigate this cross-cultural pattern by evaluating 3- and 4-year-old Australian and Iranian children’s belief and knowledge understanding across a range of distinct tasks designed to reflect culturally familiar situations. Results confirmed that the Iranian children were faster than the Australians in mastering tasks assessing the understanding of how and when knowledge is acquired. Iranian children, however, lag behind in passing diverse belief tasks. Scores in false belief tasks were comparable across both countries. These findings are discussed with reference to socio-cultural differences across the two countries.

Differences in the developmental patterns of depression with and without additional somatic symptoms

Depression accompanied by somatic symptoms (“somatic” depression) has been found to differ from depression without the additional symptoms (“pure” depression) in their gender ratio, their association with measures of perceived gender inequality taken from both respondents and their parents, and in their response to pharmacological treatment. Further evidence of the distinction between the two syndromes might come from differential patterns of development. Data on the annual incidence of new cases of depression exhibited by a representative sample of respondents aged 12–19 came from the National household survey on drug use and health. Between early adolescence (ages 12–14) and late adolescence (ages 15–19), female respondents exhibited a much larger increase in somatic depression than in pure depression. Males did not exhibit the same pattern. These results further support the hypothesis that somatic and pure depressions are two distinct disorders.

A 3-year longitudinal study of children's comprehension of counting: Do they recognize the optional nature of nonessential counting features?

This 3-year longitudinal study examines developmental changes in children's ability to differentiate essential from nonessential counting features. Kindergarteners watched a computer-presented detection task which included three kinds of counts: correct conventional, erroneous and pseudoerrors (with and without statements of cardinal values for the sets). Children had to judge the correctness of those counts and justify their responses. Our data showed that children's explanations provided additional information and thus increased reliability of the assessment. Children were better at detecting erroneous counts than pseudoerrors and at detecting pseudoerrors with cardinal value than pseudoerrors without it. Group analysis showed that children's performance improved with age but analysis of individual differences qualified this result by identifying individual differences in developmental patterns. This study thus provides a more detailed picture of the developmental trajectories of children's comprehension of essential and nonessential counting aspects.

The mouse olfactory peduncle. 3. Development of neurons, glia, and centrifugal afferents.

The present series of studies was designed to provide a general overview of the development of the region connecting the olfactory bulb to the forebrain. The olfactory peduncle (OP) contains several structures involved in processing odor information with the anterior olfactory nucleus (cortex) being the largest and most studied. Results indicate that considerable growth occurs in the peduncle from postnatal day (P)10–P20, with reduced expansion from P20 to P30. No evidence was found for the addition of new projection or interneurons during the postnatal period. GABAergic cells decreased in both number and density after P10. Glial populations exhibited different patterns of development, with astrocytes declining in density from P10 to P30, and both oligodendrocytes and microglia increasing through the interval. Myelination in the anterior commissure emerged between P11 and P14. Dense cholinergic innervation was observed at P10 and remained relatively stable through P30, while considerable maturation of serotonergic innervation occurred through the period. Unilateral naris occlusion from P1 to P30 resulted in about a 30% reduction in the size of the ipsilateral peduncle but few changes were observed on the contralateral side. The ipsilateral peduncle also exhibited higher densities of GAD67-containing interneurons and cholinergic fibers suggesting a delay in normal developmental pruning. Lower densities of interneurons expressing CCK, somatostatin, and NPY and in myelin basic protein staining were also observed. Understanding variations in developmental trajectories within the OP may be an important tool for unraveling the functions of the region.

Ingenieurs van de samenleving - De opkomst van het technocratisch denken in de Verenigde Staten en Nederland

After World War I the technocratic movement Technocracy Inc. was established in the United States. Supporters of this movement were utopian engineers who wanted to eradicate waste in American industry, and increasingly considered their methods applicable to the economy and society at large. Technocratic ideas also gained ground in the Netherlands in the interwar period. The purpose of this article is to examine the emergence and development of technocratic thought in the United States and the Netherlands in this period, and to analyze their different patterns of development.

Stability of self-control and gender

PurposesThis study provides a rigorous test of gendered nature of self-control stability hypothesis by examining the existence and persistence of gender differences in self-control, and gender differences in developmental patterns of self-control and in source of self-control. MethodsFive-wave longitudinal data of Korean youths from age 10 to 14 are analyzed. t-tests are conducted to examine whether males have significantly lower self-control than females and whether the self-control differences across two genders persist. To test gender differences in developmental patterns of self-control, growth mixture modeling is utilized. Finally, hierarchical linear modeling is used to examine gender differences in the relationships between social factors and self-control. ResultsThe study shows that gender differences in self-control persist over the short term but not over the long term, that males and females experience similar developmental patterns of self-control, and that similarities appear in the relationships between social factors and self-control across both genders. ConclusionsThis study provides partial support for Gottfredson and Hirschi’s arguments on persistent gender differences in self-control and parenting’s main effect on self-control, while strong relative stability is found. The findings indicate that the stability postulate and the relationships between social factors and self-control are applicable to both genders.

Hostile, aggressive family conflict trajectories during the transition to adulthood: Associations with adolescent Big Five and emerging adulthood adjustment problems

The goal of this longitudinal study was to investigate the relation of adolescents' Big Five factor (BFF) personality to the development of different patterns of mother–adolescent hostile, aggressive conflict (MHAC) from late adolescence to young adulthood. Furthermore, we examined the prediction of Antisocial Problems (AP) and Depressive Problems (DP) in emerging adulthood from BFF and MHAC trajectories. 385 adolescents participated in this study (age 15–16 at Time 1 and 21–22 at Time 4). Using latent growth curve analysis, Low stable (69.1%), Medium Increasing, (23.3%), and High decreasing (7.6%) trajectories were distinguished. Low adolescents' emotional stability was directly related to AP and indirectly related to DP, throughout the mediation of both Medium Increasing and High Decreasing trajectories. Agreeableness was directly negatively related to DP and indirectly throughout the mediation of High Decreasing trajectory. Low Conscientiousness was indirectly related to DP, throughout the mediation of Medium Increasing trajectory.385 adolescents participated in this study (age 15–16 at Time 1 and 21–22 at Time 4). Using latent growth curve analysis, Low stable (69.1%), Medium Increasing, (23.3%), and High decreasing (7.6%) trajectories were distinguished. Low adolescents' emotional stability was directly related to AP and indirectly related to DP, throughout the mediation of both Medium Increasing and High Decreasing trajectories. Agreeableness was directly negatively related to DP and indirectly throughout the mediation of High Decreasing trajectory. Low Conscientiousness was indirectly related to DP, throughout the mediation of Medium Increasing trajectory.

Tourism as an Additional Source of Rural Livelihoods: An Experience from Two Villages of Rajasthan

The study has been carried out in two villages of Rajasthan—Oriya village in Mount Abu and Laxmon Ki Basti in Jaisalmer subdivision. In spite of being closely located to two tourist spots (Mount Abu and Sam Desert), the livelihood of the two villagers has shown vastly different patterns of development. While the inhabitants of Laxmon ki Basti are vulnerable and exposed to a variety of risks due to the low endowment of physical resources, low level of human capital (education and skills) and lack of proper institutional development, the quality of life is comparatively far superior for the residents of Oriya village. The study attempts to analyse the impact of tourism on livelihood patterns of the working population of these two villages. It is of special significance as an important source of economic activity for a majority of the working population in Laxmon ki Basti, although camel safari is seasonal and depends on the influx of tourists.

Heterochrony and post‐natal growth in mammals – an examination of growth plates in limbs

Mammals display a broad spectrum of limb specializations coupled with different locomotor strategies and habitat occupation. This anatomical diversity reflects different patterns of development and growth, including the timing of epiphyseal growth plate closure in the long bones of the skeleton. We investigated the sequence of union in 15 growth plates in the limbs of about 400 specimens, representing 58 mammalian species: 34 placentals, 23 marsupials and one monotreme. We found a common general pattern of growth plate closure sequence, but one that is universal neither between species nor in higher-order taxa. Locomotor habitat has no detectable correlation with the growth plate closure sequence, but observed patterns indicate that growth plate closure sequence is determined more strongly through phylogenetic factors. For example, the girdle elements (acetabulum and coracoid process) always ossify first in marsupials, whereas the distal humerus is fused before the girdle elements in some placentals. We also found that heterochronic shifts (changes in timing) in the growth plate closure sequence of marsupials occur with a higher rate than in placentals. This presents a contrast with the more limited variation in timing and morphospace occupation typical for marsupial development. Moreover, unlike placentals, marsupials maintain many epiphyses separated throughout life. However, as complete union of all epiphyseal growth plates is recorded in monotremes, the marsupial condition might represent the derived state.

A Planet-Wide Information System

Purpose– Various economic growth theories propose a view of globalisation resulting in economic convergence. However, others suggest economic divergence (i.e. a widening gap between global rich and poor) and others still, different patterns of development. Hence it is necessary to validate such globalisation hypotheses with sound quantitative data.Design/methodology/approach– The paper proposes the “Global Change Data Base” (GCDB) that includes an analytical tool (AT) providing correlations between primary and secondary data (by country by year) from the fields of population, agriculture, economy, energy and human development.Findings– The AT is able to first test the hypotheses on global development and globalisation and second to suggest new hypotheses on the mechanisms of globalisation. Results can be used in curricula of Global Studies worldwide.Research limitations/implications– These data analysis has still to be complemented by sociological, political and economic theories providing insights into global restructuration processes and structural transitions through globalisation.Practical implications– “Forward-looking” as an emerging scientific discipline is supported by the proposed detailed analytical methods, namely by providing quantitative, in-depth techno-socio-economic megatrends.Social implications– The perception of globalisation might be rendered more inter-subjectively traceable by the GCDB.Originality/value– Up-to-date means of forward-looking are less detailed regarding economic sectors and energy sources compared to the proposed GCDB.

Sex and Breed-Dependent Organ Development and Metabolic Responses in Foetuses from Lean and Obese/Leptin Resistant Swine

The present study aimed to determine the effects of breed and sex on growth patterns and metabolic features of advanced-pregnancy foetuses exposed to the same environmental conditions. Thus, at Day 62 of pregnancy, swine foetuses from an obese breed with leptin resistance (Iberian breed) were compared to lean crossbred foetuses (25% Large White ×25% Landrace ×50% Pietrain). There were differential developmental patterns in foetuses with leptin resistance, mainly a higher relative weight of the brain resembling “brain-sparing effect”. Prioritization of brain growth may be protective for the adequate growth and postnatal survival of the Iberian individuals, an ancient breed reared in extensive semi-feral conditions for centuries. There were also clear sex-related differences in foetal development and metabolism in the Iberian breed. Female Iberian foetuses were similar in size and weight to male littermates but had a significantly higher relative liver to body weight ratio resembling “liver-sparing effect” and a trend for a higher relative intestine to body ratio. Moreover, the availability of triglycerides, cholesterol and IL-6 in female Iberian foetuses was similar to that of lean crossbred foetuses. Overall, these features may favour a better postnatal survival and development of females, the sex more critical for the species survival. These findings set the basis for future translational studies aimed at increasing the knowledge on the interaction between genetic and environmental factors in the early programming of the adult phenotype.

Egg development time in the Zebra FinchTaeniopygia guttatavaries with laying order and clutch size

As female birds are able to lay no more than a single egg each day, in those species producing larger clutches the first laid eggs may get a developmental head-start over later eggs in the clutch. All other things being equal, the differential pattern of development across the clutch may contribute to hatching asynchrony and subsequent inequity in the competition between brood mates, and ultimately increase variance in the quality and fitness of first- and last-laid offspring. It has been suggested that females might allocate resources differently across the laying sequence to moderate the developmental rate and hatching time of different embryos. We tested this theory in the Zebra Finch Taeniopygia guttata, a common model species for investigating maternal effects in birds. We removed 758 eggs from 160 nests shortly after they were laid and used artificial incubators to control for parental effects and monitor hatching times. Eggs from larger clutches consistently hatched sooner than those from average-sized clutches, demonstrating that the intrinsic properties of an egg can alter the developmental time of embryos. There were also differences in the development time of eggs across the laying sequence, but these patterns were weaker, inconsistent and unrelated to sequential investment across the laying sequence in a straightforward way. This study indicates that maternal resource allocation to eggs across the laying sequence and across clutch sizes can influence development times and play a potentially important role in determining the competitive dynamics of broods.

The Late Glacial and Holocene development of vegetation in the area of a fossil lake in the Skaliska Basin (north-eastern Poland) inferred from pollen analysis and radiocarbon dating

ABSTRACT The development of vegetation in the Skaliska Basin has been reconstructed on the basis of palynological analysis and radiocarbon dating (AMS technique) of 6 sites from the late phase of the Bolling- Allerod interstadial complex to modern times. Although the area covers 90 km2, the mosaic character of habitats led to the development of different patterns of vegetation changes during the Late Glacial and Holocene. Only one site located in the eastern part of the Skaliska Basin reflected the ‘pine phase’ of Allerod, and this is the oldest data on vegetation in the Skaliska Basin. Interesting discrepancies were recorded during the Younger Dryas when patches of shrublands with Juniperus were distinct around some of the sites, while steppe with Artemisia was common in others. The beginning of the Holocene brought an expansion of birch-pine forest, but around 9600 cal. BC a cold oscillation took place which was reflected in an increase in birch in the woodlands in the western and eastern part of the Skaliska Basin. In the Preboreal chronozone elm (Ulmus) also expanded in the area but its appearance was non-synchronous. The vegetation of the Boreal chronozone was similar in the whole area and the most characteristic feature was the rapid expansion of hazel (Corylus avellana) which displaced Betula from the most of its sites. At that time a distinct redeposition of pollen material in the Parchatka river valley was detected which was probably the effect of an increase in fluvial activity of the river (humid oscillation). The following stage of vegetation development was climax woodlands with Tilia cordata, Ulmus, Quercus, Corylus avellana, and Alnus in damp places. At the beginning of the Subboreal chronozone the expansion of Quercus took place, which was subsequently replaced by Picea abies and partly Carpinus betulus. The pattern of Picea abies expansion distinctly presents two maxima which is characteristic of many sites in the north-eastern Poland. The Subatlantic chronozone is represented only by the profile from the Skaliski Forest, where, because of sandy ground, Pinus sylvestris was the dominant element. Human impact was poorly reflected through the rare occurrence of pollen grains of Cerealia type in the pollen profiles spanning the time from the Subboreal chronozone to modern times. In most profiles AMS dating produced age discrepancies, which limited the possibility of establishment of a detailed chronology. However, dates obtained from the material contaminated by mixture of glycerine, thymol and ethyl alcohol, pretreated by alcohol, showed reliable results in most cases.

Sustainable health information exchanges: the role of institutional factors

The transfer of patient information between the domains of community and hospital influences the quality, continuity and cost of health care. To supply the need for information flow between community and hospital, computerized Health Information Exchange (HIE) systems have evolved. This paper examines the institutional forces that shape HIE development in Israel and in the United States.In Israel, the vertically integrated Clalit health services developed a different solution for HIE than was developed in the non-vertically integrated Maccabi and Meuhedet health funds. In the United States the fragmented nature of providers – outside of specific networks such as parts of the Kaiser Permanente and Veterans Administration system – have dictated a very different evolution of information flow between community and hospital. More broadly, we consider how institutional factors shape (and will shape) the development of HIEs in different contexts.This paper applies institutional analysis to explain the emergence of different patterns of development of HIE systems in each of the environments. The institutional analysis in this paper can be used to anticipate the future success or failure of incentives to promote digital information sharing at transition of care.