stylistic:tone
Self-report measures

Measures of empathy also frequently require subjects to self-report upon their own ability or capacity for empathy, using Likert -style numerical responses to a printed questionnaire that may have been designed to reveal the affective, cognitive-affective, or largely cognitive substrates of empathic functioning. Some questionnaires claim to reveal both cognitive and affective substrates. However, a 2019 meta analysis questions the validity of self-report measures of cognitive empathy, finding that such self-report measures have negligibly small correlations with corresponding behavioral measures. Balancing subjective self-perceptions along with observable behaviors can help to contribute to a more reliable assessment of empathy.

Such measures are also vulnerable to measuring not empathy but the difference between a person's felt empathy and their standards for how much empathy is appropriate. For example, one researcher found that students scored themselves as less empathetic after taking her empathy class. After learning more about empathy, the students became more exacting in how they judged their own feelings and behavior, expected more from themselves, and so rated themselves more severely.

In the field of medicine, a measurement tool for carers is the Jefferson Scale of Physician Empathy, Health Professional Version (JSPE-HP).

The Interpersonal Reactivity Index (IRI) is among the oldest published measurement tools still in frequent use (first published in 1983) that provides a multi-dimensional assessment of empathy. It comprises a self-report questionnaire of 28 items, divided into four seven-item scales covering the subdivisions of affective and cognitive empathy described above. More recent self-report tools include The Empathy Quotient (EQ) created by Baron-Cohen and Wheelwright which comprises a self-report questionnaire consisting of 60 items. Another multi-dimensional scale is the Questionnaire of Cognitive and Affective Empathy (QCAE, first published in 2011).

The Empathic Experience Scale is a 30-item questionnaire that measures empathy from a phenomenological perspective on intersubjectivity, which provides a common basis for the perceptual experience (vicarious experience dimension) and a basic cognitive awareness (intuitive understanding dimension) of others' emotional states.

It is difficult to make comparisons over time using such questionnaires because of how language changes. For example, one study used a single questionnaire to measure 13,737 college students between 1979 and 2009, and found that empathy scores fell substantially over that time. A critic noted these results could be because the wording of the questionnaire had become anachronistically quaint (it used idioms no longer in common use, like "tender feelings", "ill at ease", "quite touched", or "go to pieces" that today's students might not identify with).