Time Management Behavior Scale (TMBS)
A widely-used survey instrument developed by Macan et al. (1990) to measure time management behaviors across four dimensions: goal-setting and prioritizing, time management mechanics, preference for organization, and perceived control of time. Used in 39+ empirical studies with high reliability (Cronbach's alpha 0.76-0.97).
Last updated: 2026-04-04 22:53
Overview
The Time Management Behavior Scale (TMBS) is a survey instrument originally developed by Macan et al. (1990) and later refined by Macan (1994). It was the most frequently used measurement tool in the systematic review of 107 empirical studies, appearing in 39 studies.
Dimensions
The scale measures four sub-dimensions of time management behavior:
- Goal-setting and prioritizing (10 items) - e.g., "I set deadlines"
- Time management mechanics (11 items) - e.g., "I schedule time daily"
- Preference for organization (8 items) - e.g., "I organize paperwork"
- Perceived control of time (5 items) - e.g., "I feel in control of my time"
Psychometric Properties
The TMBS has demonstrated high internal consistency, with Cronbach's alpha values ranging from 0.76 to 0.97 across studies. It was used across both higher education and workplace research settings.
Research Usage
The scale was employed in 39 empirical studies spanning both educational and workplace contexts. Its broad adoption reflects its reliability and the comprehensiveness of its four-factor structure, making it a cornerstone instrument in quantitative time management research from 2006-2021.
Related Items
10 IQ Point Drop from Heavy Multitasking
Research finding from a 2024 study showing that heavy multitasking can lead to a temporary drop of up to 10 IQ points, a reduction greater than the effect of losing a night's sleep, highlighting severe cognitive costs of task switching.
2-3 Hour Daily Deep Focus Limit
Research from Hubstaff's 2026 Global Work Index showing the average team member only spends 2-3 hours per day in deep focus, based on data from over 140,000 workers across 17,000 organizations, highlighting the scarcity of focused work time.
2.5% Supertaskers Statistic
Research finding showing only 2.5% of people are 'supertaskers' who can genuinely multitask without performance degradation. For the remaining 97.5% of the population, multitasking is actually rapid task switching with cognitive penalties.
30-60 Second Focus Entry (Neuroscience)
Neuroscience finding that spending 30-60 seconds staring at a specific point before deep work narrows the visual field and triggers norepinephrine release, priming the brain for focused cognitive effort.