Multidimensional Fatigue Inventory (MFI-20) Test

People who want to understand how tiredness appears across physical, mental, motivational, and activity-related dimensions can use this fatigue questionnaire as a self-report profile. The Multidimensional Fatigue Inventory (MFI-20) Test is suited to readers noticing fatigue alongside reduced concentration, daily output, initiative, or vitality. This profile organizes those experiences into a structured snapshot for reflection on current functioning.

What This Assessment Explores

The profile shows six fatigue dimensions.

These scales and bands are:

• Physical Fatigue (4-20) measures physical tiredness, weakness, and reduced capacity: Low 4-9; Moderate 10-14; High 15-20.
• Reduced Motivation (4-20) measures lost interest and desire to act: Low decrease 4-9; Moderate decrease 10-14; High decrease 15-20.
• Reduced Activity (4-20) measures reduced activity and initiative: Low reduction 4-9; Moderate reduction 10-14; High reduction 15-20.
• General Fatigue (4-20) measures overall fatigue, weakness, and vitality: Low 4-9; Moderate 10-14; High 15-20.
• Asthenia (20-100) measures the severity of asthenic symptoms, including fatigue, weakness, and reduced work capacity: Low 20-46; Moderate 47-73; High 74-100.
• Mental Fatigue (4-20) measures mental tiredness, concentration difficulty, and reduced cognition: Low 4-9; Moderate 10-14; High 15-20.

Methodology and Scientific Basis

Each item uses a five-point response format ranging from Yes, that is true to No, that is not true, with Not sure in the middle. Statements cover energy, physical capacity, plans, concentration, and daily output, so the MFI-20 questionnaire records functioning rather than observed performance.

The online questionnaire displays separate scale scores, and each result is interpreted within the dimension being measured. Because the scales use different ranges, scores should be read within their own dimensions rather than ranked against one another.

The online questionnaire is conceptually consistent with the published MFI-20, but the psychometric findings from the seven-sample and German population-norms studies concern that published instrument, not this online implementation. The seven-sample study reported supportive psychometric findings, while the German population-norms study found adequate reliability and convergent validity but did not fully reproduce the original five-factor structure.

These studies support a structured view of fatigue without making one factor model definitive. Scores may vary with sleep, illness, stress, workload, wording interpretation, and current self-awareness, so this self-report profile is best read as time-specific information alongside broader assessment when decisions depend on it.