The most complete inventory of musical talent that has been proposed is that of Seashore, who, with his numerous students, has made the most important contributions in this field. Seashore would include tests of all the following functions in the complete musical psychograph:
I. Musical Sensitivity
A. Basic Capacities
1. Sense of pitch 2. Sense of intensity 3. Sense of time 4. Sense of extensity
1. Sense of timbre 2. Sense of rhythm 3. Sense of consonance 4. Sense of volume
1. Control of pitch 2. Control of intensity 3. Control of time 4. Control of timbre 5. Control of rhythm 6. Control of volume
1. Auditory imagery 2. Motor imagery 3. Creative imagination 4. Memory span 5. Learning power
1. Musical free association 2. Musical power of reflection 3. General intelligence
1. Musical taste: likes and dislikes 2. Emotional reaction to music 3. Emotional self-expression in music
Seashore has succeeded in devising, standardizing, and making available for practical purposes scales of measurement for five of the basic capacities of musical sensitivity. These are for pitch, intensity, time, consonance, and tonal memory. Research is under way to bring the other elements of musical talent similarly within the province of mental measurement.