Developmental trajectories in infant pointing: The effects of vocalisation and communicative intention

2020 ◽  
pp. 014272372098019
Author(s):  
Paola Perucchini ◽  
Arianna Bello ◽  
Fabio Presaghi ◽  
Tiziana Aureli
Keyword(s):  
Longitudinal Study ◽  
Individual Differences ◽  
Multilevel Analysis ◽  
Random Effects ◽  
Developmental Trajectories ◽  
Linear Increase ◽  
Communicative Intention ◽  
Quadratic Component ◽  
Age Trends ◽  
The Individual

The goal of this intensive longitudinal study was to trace the developmental trajectories of infant pointing production, through consideration of the modality (i.e. pointing alone vs pointing–vocal coupling) and the communicative intention (i.e. imperative vs declarative). Multilevel analysis was used to model the normative trend and the individual differences in pointing trajectories. Eighteen Italian infants participated in this study and were followed monthly from 9 to 18 months of age. The infants were involved in a structured task designed to elicit imperative and declarative pointing (T-POINT). The proportion of pointing for each participant as a function of age, modality (pointing alone vs pointing–vocal coupling) and context (imperative vs declarative), and the interactional effects, were modelled. Random effects among participants for age trends were estimated. This analysis defined the following: (1) a significant linear increase in pointing production, without and with vocalisation; (2) a significant increase in pointing–vocal coupling over pointing produced alone, in an accelerated form; (3) that the context does not appear to moderate linear and quadratic trends; and (4) that infants differed in their developmental trajectories with respect to the quadratic component, which means that some of the infants developed faster with age than the others. Results are discussed with respect to the hypothesis of strong integration between different systems of communication, further underlining the progression of pointing–vocal coupling.

scholarly journals How rewatching video lectures impacts students’ performance in assessments in MOOCs

2020 ◽  
Author(s):  
Dmitry Abbakumov ◽  
Darja Kravchenko ◽  
William Kuskin ◽  
Alexandra Urban
Keyword(s):  
Individual Differences ◽  
Student Success ◽  
Random Effects ◽  
Instructional Tool ◽  
Absolute Truth ◽  
Video Lectures ◽  
Fixed And Random Effects ◽  
Cross Classification ◽  
The Individual ◽  
Important Activity

Recorded video lectures are a core instructional tool in MOOCs. Students value video lectures and rank rewatching them as an important activity they use to prepare for assessments. Platforms promote rewatching video lectures as an essential instrument of preparation. Despite the widespread use of this strategy, we understand very little about how rewatching video lectures impacts students’ performance. In this study, we assess the overall effect of rewatching video lectures on students’ performance retaking assessments, and the individual differences among items within the assessment. We use a cross-classification multilevel logistic approach with fixed and random effects of rewatching video lectures and apply the approach to four courses on the Coursera platform. We found that the overall effect varies over courses and among items within an assessment: it can take positive, null, and negative values. Our conclusion is caution: the generalized recommendation that students rewatch videos before they retake a failed assessment is not an absolute truth. Individual students behave differently in a given assessment situation, and more research is needed to better understand student success.

scholarly journals Risks and Opportunities for Youth in the Digital Era

2021 ◽  
Author(s):  
Vasileios Stavropoulos ◽  
Frosso Motti-Stefanidi ◽  
Mark D. Griffiths
Keyword(s):  
Individual Differences ◽  
Digital Media ◽  
Internet Use ◽  
Media Use ◽  
Developmental Trajectories ◽  
Real Life ◽  
Well Being ◽  
Heated Debate ◽  
Use Of The Internet ◽  
The Individual

Abstract. Due to continued groundbreaking digital advancements, Internet use has increased significantly. This has led to a heated debate in relation to weighing the many advantages of the technology against its potentially deleterious effects. To address such questions, experts converge on the need for greater knowledge around the way individual differences, partly shaped by an individual’s unique experiences of engaging with the medium, and partly by other real-life experiences, lead to different developmental trajectories. Consequently, the goals of the present review are to (i) broadly describe differences in digital media applications, users, and usage; (ii) introduce the Cyber-Developmental Framework (CDF), as an overarching framework for understanding individual differences in adaptive and maladaptive digital media use among youth; (iii) delineate the cyber-component of this framework in relation to users’ experience of the digital context, their activity within it, as well as their digital self-presence, which may have an impact on their digital media use; and (iv) summarize priorities and future directions through the lens of this CDF. Within this context, this review particularly emphasizes the effect of digital media use on youth’s psychological well-being. It is argued that the trajectory youth will follow in their use of the Internet is a function of the interplay between their characteristics, their proximate and distal contexts, and the particular features of the digital application(s) that the individual is engaged in. The review points to the need to conduct research focusing on better understanding the developmental and digital-context-related influences on youth’s trajectories of Internet use.

scholarly journals Impacts of stroke and cognitive impairment on activities of daily living in the Taiwan longitudinal study on aging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pi-Hsia Lee ◽  
Ting-Ting Yeh ◽  
Hsin-Yen Yen ◽  
Wan-Ling Hsu ◽  
Valeria Jia-Yi Chiu ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Longitudinal Study ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Skill Training ◽  
Community Dwelling ◽  
Combined Effects ◽  
Stroke Group ◽  
The Individual ◽  
Community Dwelling Older Adults

AbstractStroke and cognitive impairment are common in older population. They often occur together and their combined effects significantly increase disability in both basic (BADLs) and instrumental (IADLs) activities of daily living. We investigated the individual and combined impacts of stroke and cognitive impairment on BADLs and IADLs. A total of 3331 community-dwelling older adults were enrolled from the Taiwan longitudinal study on aging in 2011. Both BADLs and IADLs were analyzed. Combination of stroke and cognitive impairment increased severity of ADL disabilities, but similar prevalence, similar numbers of summed BADL and IADL tasks with disability, and similar levels of difficulty for each BADL and IADL task were found between the stroke group and cognitive impairment group. The former had more difficult in dressing while the latter had more difficult in using the telephone, transport, and managing finances. A hierarchy of ADLs was also observed in all groups. ADL skill training supplemented with cognitive and physical interventions should focus on secondary prevention of dementia and improve motor functional capacity to reduce loss of ADLs.

Individual Uniqueness in the Neonatal Functional Connectome

2021 ◽  
Author(s):  
Qiushi Wang ◽  
Yuehua Xu ◽  
Tengda Zhao ◽  
Zhilei Xu ◽  
Yong He ◽  
...  
Keyword(s):  
Individual Differences ◽  
Individual Identification ◽  
Imaging Data ◽  
Functional Connectome ◽  
Middle Range ◽  
Human Connectome Project ◽  
The Individual ◽  
And Behavior ◽  
Identification Analysis ◽  
The Brain

Abstract The functional connectome is highly distinctive in adults and adolescents, underlying individual differences in cognition and behavior. However, it remains unknown whether the individual uniqueness of the functional connectome is present in neonates, who are far from mature. Here, we utilized the multiband resting-state functional magnetic resonance imaging data of 40 healthy neonates from the Developing Human Connectome Project and a split-half analysis approach to characterize the uniqueness of the functional connectome in the neonatal brain. Through functional connectome-based individual identification analysis, we found that all the neonates were correctly identified, with the most discriminative regions predominantly confined to the higher-order cortices (e.g., prefrontal and parietal regions). The connectivities with the highest contributions to individual uniqueness were primarily located between different functional systems, and the short- (0–30 mm) and middle-range (30–60 mm) connectivities were more distinctive than the long-range (>60 mm) connectivities. Interestingly, we found that functional data with a scanning length longer than 3.5 min were able to capture the individual uniqueness in the functional connectome. Our results highlight that individual uniqueness is present in the functional connectome of neonates and provide insights into the brain mechanisms underlying individual differences in cognition and behavior later in life.

Predictors of Positive Psychological Capital: An Attempt Among the Teacher Communities in Rural Jharkhand, India

2021 ◽  
pp. 0258042X2199101
Author(s):  
Mukti Clarence ◽  
Viju P. D. ◽  
Lalatendu Kesari Jena ◽  
Tony Sam George
Keyword(s):  
Individual Differences ◽  
Organizational Support ◽  
Psychological Capital ◽  
Contextual Factors ◽  
Meaningful Work ◽  
Equation Modeling ◽  
School Teachers ◽  
Positive Psychological Capital ◽  
The Individual ◽  
The Impact

In the recent times, researchers have shown an increased interest in positive psychological capital (PsyCap). However, it is acknowledged that due to the limited number of studies conducted on the antecedents of psychological capital, there is a lack of sufficient data for conclusively proving the antecedents of PsyCap. Consequently, this article aims to explore the potential antecedents of PsyCap as a reliable source of data in the context of rural school teachers. The focus is to investigate both the individual differences and the contextual factors as desirable variables that constitute PsyCap among the school teachers of rural Jharkhand, India. Samples of 1,120 respondents from different rural schools were collected and analysed with Structural Equation Modeling (AMOS 20.0). The findings of the study explained that both the individual differences ( proactive personality and emotional intelligence) and the contextual factors ( perceived organizational support, servant leadership and meaningful work) have a positive relationship with PsyCap. The impact of PsyCap on teacher performance can form the basis for further research on the subject. JEL Codes: M12, M53

scholarly journals Individual Differences in the Vocal Communication of Malayan Tapirs (Tapirus indicus) Considering Familiarity and Relatedness

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1026
Author(s):  
Robin Walb ◽  
Lorenzo von Fersen ◽  
Theo Meijer ◽  
Kurt Hammerschmidt
Keyword(s):  
Individual Differences ◽  
Vocal Communication ◽  
Social Role ◽  
Animal Communication ◽  
Solitary Living ◽  
Low Visibility ◽  
Living Species ◽  
The Individual ◽  
Tapirus Indicus

Studies in animal communication have shown that many species have individual distinct calls. These individual distinct vocalizations can play an important role in animal communication because they can carry important information about the age, sex, personality, or social role of the signaler. Although we have good knowledge regarding the importance of individual vocalization in social living mammals, it is less clear to what extent solitary living mammals possess individual distinct vocalizations. We recorded and analyzed the vocalizations of 14 captive adult Malayan tapirs (Tapirus indicus) (six females and eight males) to answer this question. We investigated whether familiarity or relatedness had an influence on call similarity. In addition to sex-related differences, we found significant differences between all subjects, comparable to the individual differences found in highly social living species. Surprisingly, kinship appeared to have no influence on call similarity, whereas familiar subjects exhibited significantly higher similarity in their harmonic calls compared to unfamiliar or related subjects. The results support the view that solitary animals could have individual distinct calls, like highly social animals. Therefore, it is likely that non-social factors, like low visibility, could have an influence on call individuality. The increasing knowledge of their behavior will help to protect this endangered species.

Dynamic roles of social presence and individual differences in social TV platforms

2021 ◽  
pp. 135485652110575
Author(s):  
Jihyun Kim ◽  
Kelly Merrill
Keyword(s):  
Individual Differences ◽  
Social Presence ◽  
Online Survey ◽  
Unique Form ◽  
Tv Viewing ◽  
Television Content ◽  
Social Tv ◽  
The Social ◽  
Private And Public ◽  
The Individual

These days, many individuals engage in a unique form of TV viewing that includes a simultaneous act of watching television content and talking about it with others in a mediated environment. This phenomenon is commonly referred to as social TV viewing. Responding to the popularity of this form of TV viewing behavior, the present study examines the individual differences of the social TV viewing experience, particularly with regard to different communication platforms (e.g. private vs. public). Based on the data collected from an online survey, primary findings indicate that extroverted and lonely individuals have different social TV viewing experiences such as preferences for a particular type of platforms for social TV viewing. Further, social presence plays an important role in the understanding of social TV enjoyment in private and public platforms.

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