Mediation of X’s effect on Y through a mediator M is moderated if the indirect effect of X depends on a fourth variable. Hayes [(2015). An index and test of linear moderated mediation. Multivariate Behavioral Research, 50, 1–22. doi:10.1080/00273171.2014.962683] introduced an approach to testing a moderated mediation hypothesis based on an index of moderated mediation. Here, I extend this approach to models with more than one moderator. I describe how to test if X’s indirect effect on Y is moderated by one variable when a second moderator is held constant (partial moderated mediation), conditioned on (conditional moderated mediation), or dependent on a second moderator (moderated moderated mediation). Examples are provided, as is a discussion of the visualization of indirect effects and an illustration of implementation in the PROCESS macro for SPSS and SAS.

Partial, conditional, and moderated moderated mediation: Quantification, inference, and interpretation

The aim of the present study was to examine further the role that self-identity plays in the theory of planned behaviour and, more specifically, to: (1) examine the combined effects of self-identity and social identity constructs on intention and behaviour, and (2) examine the effects of self-identity as a function of past experience of performing the behaviour. The study was concerned with the prediction of intention to engage in household recycling and reported recycling behaviour. A sample of 143 community residents participated in the study. It was prospective in design: measures of the predictors and intention were obtained at the first wave of data collection, whereas behaviour was assessed two weeks later. Selfidentity significantly predicted behavioural intention, a relationship that was not dependent on the extent to which the behaviour had been performed in the past. As expected, there was also evidence that the perceived norm of a behaviourally relevant reference group was related to behavioural intention, but only for participants who identified strongly with the group, whereas the relationship between perceived behavioural control (a personal factor) and intention was strongest for low identifiers.

The theory of planned behaviour: Self identity, social identity, and group norms

The central unifying theme in the Manuscripts is the alienation of labour under capitalist conditions of private ownership and its transcendence and abolition under communism. The doctrine of total emancipation which, as I have argued, was crucial in enabling Marx to assimilate ‘class’ and the ‘division of labour’ in his work is much more clearly articulated here and eloquently expressed. Communism, Marx argues, is ‘the positive transcendence of all estrangement’; the abolition of private property, communism: 
is the genuine resolution of the conflict between man and nature — the true resolution of the strife between existence and essence, between objectification and self-confirmation, between freedom and necessity, between the individual and the species. Communism is the riddle of history solved, and knows itself to be this solution.27
The vision of communism Marx unfolds in the Manuscripts derives much of its force from his remarkable analysis of the alienation of labour and is clearly underpinned by a preconception of truly human, free productive activity. Man’s productive interchange with nature is in fact taken as the defining characteristic of the species: ‘the productive life is the life of the species’; and Marx is careful to point out that while an animal can also be said to engage in production it ‘only produces what it immediately needs for itself or its young’.

The Economic and Philosophic Manuscripts of 1844

Whether video game play affects social behavior is a topic of debate. Many argue that aggression and helping are affected by video game play, whereas this stance is disputed by others. The present research provides a meta-analytical test of the idea that depending on their content, video games do affect social outcomes. Data from 98 independent studies with 36,965 participants revealed that for both violent video games and prosocial video games, there was a significant association with social outcomes. Whereas violent video games increase aggression and aggression-related variables and decrease prosocial outcomes, prosocial video games have the opposite effects. These effects were reliable across experimental, correlational, and longitudinal studies, indicating that video game exposure causally affects social outcomes and that there are both short- and long-term effects.

Video Games Do Affect Social Outcomes A Meta-Analytic Review of the Effects of Violent and Prosocial Video Game Play

The issue of whether video games-violent or nonviolent-"harm" children and adolescents continues to be hotly contested in the scientific community, among politicians, and in the general public. To date, researchers have focused on college student samples in most studies on video games, often with poorly standardized outcome measures. To answer questions about harm to minors, these studies are arguably not very illuminating. In the current analysis, I sought to address this gap by focusing on studies of video game influences on child and adolescent samples. The effects of overall video game use and exposure to violent video games specifically were considered, although this was not an analysis of pathological game use. Overall, results from 101 studies suggest that video game influences on increased aggression (r = .06), reduced prosocial behavior (r = .04), reduced academic performance (r = -.01), depressive symptoms (r = .04), and attention deficit symptoms (r = .03) are minimal. Issues related to researchers' degrees of freedom and citation bias also continue to be common problems for the field. Publication bias remains a problem for studies of aggression. Recommendations are given on how research may be improved and how the psychological community should address video games from a public health perspective.

https://christopherjferguson.com/Angry%20Birds.pdf

Do Angry Birds Make for Angry Children? A Meta-Analysis of Video Game Influences on Children’s and Adolescents’ Aggression, Mental Health, Prosocial Behavior, and Academic Performance:

The paper presents a study about one of the most successful cases of social software: Wikipedia. In particular we focused on the investigation of some socio-psychological aspects related to the use of the Italian Wikipedia. In our study, we considered Wikipedia active users classified into three different roles: registered users, administrators, and bureaucrats in order to discuss our findings with respect to these different groups of users. Workflow Management Systems are applications designed to support the definition and execution of business processes. Since we consider that social aspects are relevant in the accomplishment and coordination of activities managed by such technologies, we advocate for a new class of Workflow Management Systems, i.e., Workflow Management Social Systems. These systems should emphasize the social nature of workflow management. For this reason, we propose to consider some of the relevant psychological aspects we identified in our study, interpreted in the light of some relevant socio-psychological theories, for the design of this socially enriched workflow technology.

Workflow Management Social Systems: A New Socio-psychological Perspective on Process Management

Original dataset used in the article "Does Pokémon Go lead to a more physically active life style?"

The paper presents an open usable tool, the ACME shop paradigm, for experimentally studying self-objectification due to objectifying work activities. The paradigm consists of a simulation in which ...

The ACME shop: A paradigm to investigate working (self-) objectification.

PSICOLOGIA SOCIALE n. 2, maggio-agosto 2011 La semantica della comunicazione in rete e differente da quella della carta stampata e tale differenza emerge anche nella somministrazione di web survey. In psicologia sociale, e in generale in tutte le discipline sociali, poche sono le rassegne e gli studi metodologici offerti al ricercatore sull’utilizzo di specifici strumenti informatici. Questa rassegna presenta una panoramica degli attuali strumenti offerti dal mercato software – commerciale e open source – per la creazione di una sessione di raccolta dati tramite la rete. Vengono inoltre proposte considerazioni circa il campionamento via web e le problematiche legate all’accessibilita di una web survey creata ad hoc tramite linguaggi di programmazione. Internet come strumento di ricerca: Linee guida per la creazione di web survey

Alessandro Gabbiadini

Papers

Workflow Management Social Systems: A New Socio-psychological Perspective on Process Management

Original dataset used in the article "Does Pokémon Go lead to a more physically active life style?"

The ACME shop: A paradigm to investigate working (self-) objectification.

Internet as a research tool. Guidelines for creating web surveys

Does ChatGPT Pose a Threat to Human Identity?