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Leadership Skills in Sport  

W. James Weese and P. Chelladurai

Online publication date:
Oct 2017
The study of leadership has a long and distinguished history. Over the past 100 years, researchers have pursued distinct lines of inquiry summarized in the trait theories, the behavioral ... More

Life Space in Older Adults  

Markus Wettstein, Hans-Werner Wahl, and Michael Schwenk

When referring to life space, researchers usually mean the area in which individuals move in their everyday lives. Life space can be measured based on different approaches, by means of ... More

Loneliness and Health  

Aparna Shankar

Online publication date:
Jun 2017
Loneliness or perceived social isolation is a subjective experience relating to dissatisfaction with one’s social relationships. Most research has focused on the experience of loneliness ... More

Longitudinal, Cross-Sectional, and Sequential Designs in Lifespan Developmental Psychology  

Susan Krauss Whitbourne

Online publication date:
Jan 2019
Research methods in lifespan development include single-factor designs that either follow a single cohort of individuals over time or compare age groups at a single time point. The two ... More

Longitudinal Structural Equation Modeling in Lifespan Developmental Analyses  

Philip Parker and Robert Brockman

Longitudinal structural equation modeling (LSEM) is used to answer lifespan relevant questions such as (a) what is the effect of one variable on change in and other, (b) what is the ... More

Measurement Burst Designs in Lifespan Developmental Research  

Gawon Cho, Giancarlo Pasquini, and Stacey B. Scott

Online publication date:
Mar 2019
The study of human development across the lifespan is inherently about patterns across time. Although many developmental questions have been tested with cross-sectional comparisons of ... More

Mediator Variables  

Matthew S. Fritz and Houston F. Lester

Mediator variables are variables that lie between the cause and effect in a causal chain. In other words, mediator variables are the mechanisms through which change in one variable causes ... More

Memory Rehabilitation in Healthy Aging  

Nicole D. Anderson

Healthy aging is accompanied by decrements in episodic memory and working memory. Significant efforts have therefore been made to augment episodic and working memory in healthy older ... More

Mental Health Parity  

Wayne Lindstrom

Continuing a history of inequity, private insurers have placed restrictions and limitations on coverage for mental health conditions making access to treatment services increasingly more ... More

Mental Illness: Worldwide  

Karen M. Sowers, Catherine N. Dulmus, and Braden K. Linn

In the 2010s, mental health and related issues such as suicide have become major global issues of public health concern. The indirect costs to the global economy of mental ... More

Metamemory and Cognitive Aging  

Christopher Hertzog and Taylor Curley

Online publication date:
Jul 2018
Metamemory is defined as cognitions about memory and related processes. Related terms in the literature include metacognition, self-evaluation, memory self-efficacy, executive function, ... More

Methodology for Twin Studies of Aging  

Michael J. Lyons, Chandra A. Reynolds, William S. Kremen, and Carol E. Franz

Online publication date:
Jan 2019
The rapidly increasing number of people age 65 and older around the world has important implications for public health and social policy, making it imperative to understand the factors ... More

Methods of Health Behavior Change  

Ildiko Tombor and Susan Michie

Online publication date:
Jul 2017
People’s behavior influences health, for example, in the prevention, early detection, and treatment of disease, the management of illness, and the optimization of healthcare professionals’ ... More

Mixed Methods Research in Adult Development and Aging  

Joseph E. Gaugler, Colleen M. Peterson, Lauren L. Mitchell, Jessica Finlay, and Eric Jutkowitz

Online publication date:
Jun 2018
Mixed methods research consists of collecting and analyzing qualitative and quantitative data within a singular study. The “methods” of mixed methods research vary, but the ultimate goal ... More

Mixture Modeling for Lifespan Developmental Research  

Alexandre J.S. Morin and David Litalien

Online publication date:
Apr 2019
As part of the Generalized Structural Equation Modeling framework, mixture models are person-centered analyses seeking to identify distinct subpopulations, or profiles, of participants ... More

Modeling in Sport and Performance  

Barbi Law, Phillip Post, and Penny McCullagh

Online publication date:
Dec 2017
Modeling and imagery are distinct but related psychological skills. However, despite sharing similar cognitive processes, they have traditionally been investigated separately. While ... More

Moderation in Lifespan Developmental Analyses  

Johnson Ching Hong Li and Virginia Man Chung Tze

Online publication date:
Apr 2019
In behavioral, social, and developmental research, researchers often begin with a fundamental question that examines whether there is a significant relationship between an independent ... More

Moderator Variables  

Matthew S. Fritz and Ann M. Arthur

Moderation occurs when the magnitude and/or direction of the relation between two variables depend on the value of a third variable called a moderator variable. Moderator variables are ... More

Motivation in Sport and Performance  

Glyn C. Roberts, Christina G. L. Nerstad, and P. Nicolas Lemyre

Online publication date:
Jul 2018
Motivation is the largest single topic in psychology, with at least 32 theories that attempt to explain why people are or are not motivated to achieve. Within sport psychology research, ... More

Multicultural Sport Psychology’s Consulting Role in the United States Activist–Athlete Movement  

Jessica L. David, Jesse A. Steinfeldt, I. S. Keino Miller, and Jacqueline E. Hyman

Online publication date:
Jan 2019
Multiculturalism is a broad term that encapsulates a number of idealistic constructs related to inclusion, understanding the diverse experiences of others, and creating ... More

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