Annual Research Review: Adolescent social media use is not a monolith: toward the study of specific social media components and individual differences.

Social media have drastically changed the context of adolescent development. To date, the majority of research investigating the effects of these changes has measured time spent on social media, yielding inconclusive results-likely because this approach conceptualizes social media as a monolith. Social media experiences are complex and diverse, as are adolescents themselves.

Diverse social media experiences and adolescents' depressive symptoms: the moderating role of neurobiological responsivity to rejected peers.

Adolescents' experiences with social media are complex and can impact their mental well-being differently. Our study aimed to understand how neurobiological sensitivities may moderate the association between different social media experiences and depressive symptoms. In a multiwave study, 80 adolescents (Mage = 13.

Neurobiological sensitivity to popular peers moderates daily links between social media use and affect.

Social media behaviors increase during adolescence, and quantifiable feedback metrics (e.g., likes, followers) may amplify the value of social status for teens.

Neural tracking of social hierarchies in adolescents' real-world social networks.

In the current study, we combined sociometric nominations and neuroimaging techniques to examine adolescents' neural tracking of peers from their real-world social network that varied in social preferences and popularity. Adolescent participants from an entire school district (N = 873) completed peer sociometric nominations of their grade at school, and a subset of participants (N = 117, Mage = 13.59 years) completed a neuroimaging task in which they viewed peer faces from their social networks.

Adolescents' neural sensitivity to high and low popularity: Longitudinal links to risk-taking and prosocial behavior.

Adolescents are particularly attuned to popularity within peer groups, which impacts behaviors such as risk-taking and prosocial behavior. Neurodevelopmental changes orient adolescents toward salient social cues in their environment. We examined whether neural regions that track popularity are associated with longitudinal changes in risk-taking and prosocial behavior.

Cascading bidirectional influences of digital media use and mental health in adolescence.

A substantial portion of critical adolescent development is occurring within digital environments. However, certain individual differences may lead adolescents to use digital media in diverse ways. In this chapter we suggest that the way teens use digital media influences how digital media affects their mental health.

Association of Habitual Checking Behaviors on Social Media With Longitudinal Functional Brain Development.

Importance: Social media platforms provide adolescents with unprecedented opportunities for social interactions during a critical developmental period when the brain is especially sensitive to social feedback.

Objective: To explore how adolescents' frequency of checking behaviors on social media platforms is associated with longitudinal changes in functional brain development across adolescence.

Design, Setting, And Participants: A 3-year longitudinal cohort study of functional magnetic resonance imaging (fMRI) among sixth- and seventh-grade students recruited from 3 public middle schools in rural North Carolina.

An open-access accelerated adult equivalent of the ABCD Study neuroimaging dataset (a-ABCD).

As public access to longitudinal developmental datasets like the Adolescent Brain Cognitive Development Study (ABCD Study®) increases, so too does the need for resources to benchmark time-dependent effects. Scan-to-scan changes observed with repeated imaging may reflect development but may also reflect practice effects, day-to-day variability in psychological states, and/or measurement noise. Resources that allow disentangling these time-dependent effects will be useful in quantifying actual developmental change.

An Exploratory Study of the Purchase and Consumption of Beef: Geographical and Cultural Differences between Spain and Brazil.

Beef consumption and production in Spain and Brazil are different with the consumption of beef in Brazil being three times higher than in Spain. In addition, there are variations in the economic value of production and in the traceability system. Therefore, the aim of this research was to understand the purchasing and consumption patterns using the customer behavior analysis technique of focus groups, which analyzed motivations for the consumption of beef, classifying their preferences by the intrinsic and extrinsic attributes at the time of purchase.

Knowledge, Utility, and Preferences for Beef Label Traceability Information: A Cross-Cultural Market Analysis Comparing Spain and Brazil.

The consumer environment determines consumers' buying behavior and product preferences, and understanding these factors allows businesses in the industry to identify market demands. In view of the different contexts, Spain and Brazil, there are differences in the consumption of beef, in the production and the regulatory process concerning beef, and in particular the traceability system. The traceability system is mandatory in Spain and voluntary in Brazil.

Behavioral and brain signatures of substance use vulnerability in childhood.

The prevalence of risky behavior such as substance use increases during adolescence; however, the neurobiological precursors to adolescent substance use remain unclear. Predictive modeling may complement previous work observing associations with known risk factors or substance use outcomes by developing generalizable models that predict early susceptibility. The aims of the current study were to identify and characterize behavioral and brain models of vulnerability to future substance use.

Determinants of the intention to purchase an autochthonous local lamb breed: Spanish case study.

The aim of the paper is to study consumers' acceptability for a lamb meat from a local autochthonous breed. An intention to purchase model was developed based on the Theory of Planned Behavior (TPB) and estimated using data from a survey conducted in Spain. Results indicated that consumers were willing to buy this lamb meat because 86% of respondents said that they probably/definitely would buy it, although only 23% would if the meat is not available in their usual meat store.

Aspects of quality related to the consumption and production of lamb meat. Consumers versus producers.

The purpose of this study was to identify and compare the different evaluations made by the agents at either end of the lamb meat chain, i.e. producers and consumers, in relation to the parameters that consumers use when purchasing lamb meat and the factors that affect the production of quality lamb meat.

Factors associated with the purchase of designation of origin lamb meat.

As in other products, quality labels that designate the origin of lamb meat are increasingly used by consumers as a cue for inferring the quality of the meat. The aim of the present paper is to identify those factors that most affect the purchase of lamb with an origin quality label. For this purpose a total of 371 questionnaires were carried out in the region of Aragón located in the north east of Spain.

Factors that affect and motivate the purchase of quality-labelled beef in Spain.

The aim of the present study was to identify the factors that affect and motivate the purchase of quality-labelled beef in Spain. For this purpose a total of 364 surveys were carried out on buyers of beef in three Spanish cities. The sample was divided into three groups of buyers according to the frequency with which they buy beef with a quality label.