Glossary

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Matching Person and Technology(also: MPT Model)

A framework for understanding assistive technology adoption that considers the match between a person's characteristics (preferences, needs, lifestyle), the environmental context, and the technology's features. Developed by Marcia Scherer, the MPT model frames AT adoption as a…

Mean Power Frequency(also: MPF, Mean Frequency)

Mean power frequency is a single-number summary of a signal's frequency content, computed as the power-spectrum-weighted mean of frequency. In surface-EMG-based accessibility input devices, MPF of each electrode channel is used to discriminate between contractions of nearby…

Mediated Communication(also: Proxy Communication, Supported Communication)

Communication that is facilitated or interpreted through a third party, such as a caregiver, support worker, family member, or communication partner who knows the person well. In research involving people with intellectual disabilities or complex communication needs, mediated…

Member Checking(also: Respondent Validation, Participant Validation)

A qualitative research technique in which researchers share their data interpretations and findings with members of the studied community to assess accuracy, resonance, and completeness. Member checking enhances the validity of qualitative research by ensuring that the…

Mental Fatigue(also: Cognitive Fatigue, Mental Exhaustion)

A state of reduced cognitive capacity resulting from prolonged mental effort, characterized by difficulty concentrating, slower processing, increased errors, and reduced ability to handle unexpected situations. Mental fatigue particularly affects people with dementia, traumatic…

Meta-Research(also: Research on research, Metascience)

The systematic study of research itself — the tools, workflows, norms, infrastructures, and institutional practices through which scholarly knowledge is produced, evaluated, and disseminated. Meta-research examines questions such as which methods and technologies researchers…

Minimum Clinically Important Difference(also: MCID, Minimal Clinically Important Difference)

The smallest change in a measurement that is perceived as beneficial or meaningful from a clinical perspective. MCID thresholds help researchers and clinicians distinguish statistically significant changes from clinically meaningful improvements. In digital health and assistive…

Minimum String Distance(also: MSD, Edit Distance, Levenshtein Distance)

A metric for measuring text entry accuracy by calculating the minimum number of single-character insertions, deletions, and substitutions needed to transform the transcribed text into the intended text. In text entry research, the MSD error rate is typically expressed as a…

Mixed Methods Research(also: Mixed-Methods, Multi-Method Research)

A research approach that combines quantitative methods (statistical analysis, surveys, measurements) with qualitative methods (interviews, thematic analysis, ethnography) within a single study or program of research. Mixed methods research is common in accessibility studies…

Mixed Methods Research(also: Mixed Methods, Mixed Method Evaluation)

A research approach that combines both quantitative methods (such as performance measurement and statistical analysis) and qualitative methods (such as interviews and thematic analysis) within a single study. In accessibility research, mixed methods are particularly valuable…

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