Big 5 Scales
Personality test measuring the big five personality traits and two aspects of each, developed from the Big Five Aspects Scale.

Personality test measuring the scales of the HEXACO Personality Inventory from the International Personality Item Pool.

Vocabulary Survey
Random sample of all English words, allowing for the total size of the subject's vocabulary to be estimated.

Spatial Ability Test
Intelligence test measuring spatial visualization ability.

This is the psychometrics page of the Alaska Research Group.

Psychometrics is the field of psychology that studies measurment of the mind, including its knowledge, personality and intelligence aspects. Here you will find a curated collection of psychometric instuments that can be used for education of self exploration.