BACKGROUND: Mobility is a key determinant and outcome of healthy ageing but its definition, conceptual framework and underlying constructs within the physical domain may need clarification for data comparison and sharing in ageing research. This study aimed to (1) review definitions and conceptual frameworks of mobility, (2) explore agreement on the definition of mobility, conceptual frameworks, constructs and measures of mobility, and (3) define, classify and identify constructs.METHODS: A three-step approach was adopted: a literature review and two rounds of expert questionnaires (n = 64, n = 31, respectively). Agreement on statements was assessed using a five-point Likert scale; the answer options 'strongly agree' or 'agree' were combined. The percentage of respondents was subsequently used to classify agreements for each statement as: strong (≥ 80%), moderate (≥ 70% and < 80%) and low (< 70%).RESULTS: A variety of definitions of mobility, conceptual frameworks and constructs were found in the literature and among respondents. Strong agreement was found on defining mobility as the ability to move, including the use of assistive devices. Multiple constructs and measures were identified, but low agreements and variability were found on definitions, classifications and identification of constructs. Strong agreements were found on defining physical capacity (what a person is maximally capable of, 'can do') and performance (what a person actually does in their daily life, 'do') as key constructs of mobility.CONCLUSION: Agreements on definitions of mobility, physical capacity and performance were found, but constructs of mobility need to be further identified, defined and classified appropriately. Clear terminology and definitions are essential to facilitate communication and interpretation in operationalising the physical domain of mobility as a prerequisite for standardisation of mobility measures.
The term ‘immersion’ is used frequently by professional video game developers (in both the entertainment and serious/applied industries), academics, journalists, and players. However, this word can refer to a range of different modes of engagement for players and standardisation would improve discussion of the topic. This paper suggests and explains four categories: 1. 'Systems immersion' can be used to describe when players are deeply engaged with the mechanics, challenges, and rules of a game, and is similar to a state of ‘flow’. 2. 'Spatial immersion' is the sense of a player being present in, or transported to, the virtual world, and is linked to the concept of embodiment. 3. 'Empathic/social immersion' describes the connection that a player may develop towards the characters (AI or human) and the social context of a game.4. 'Narrative/sequential immersion' can be used to describe a player’s compulsion to see how a sequence of events continues, typically in a narrative, but this is related to any progression, such as exploring new spaces or evolving gameplay mechanics.
Providing high-quality feedback is essential for improving preservice teacher performance. Rather than post-lesson feedback, immediate performance feedback while teaching is considered effective. This article reports on developing and piloting a standardised tool for synchronous feedback. Eight teacher educators from a Dutch higher education institution were trained to use the tool (based on accepted models of teacher roles, observation criteria and feedback levels) with pre-recorded lessons. Interobserver reliability was good for teacher roles and sufficient for feedback levels. Positive evaluations of the tool and educators’ interest in its application, warrant further research into scalability and effectiveness of synchronous feedback delivery.
