Rankings can be based on subjectively perceived "quality," on some combination of empirical statistics, or on surveys of educators, scholars, students, prospective students, or others.

The change winds-how can something be subjectively perceived as a wind with no objective correlation, but be based upon a multiple chronological readjustment?

One brain imaging study suggest that the unpleasantness of subjectively perceived dyspnea is processed in the right human anterior insula and amygdala.

All six thousand volunteers will be visually and audiometrically screened to compare actual against subjectively perceived sensory loss.

Lastly, because behavior is perceived so subjectively, it's possible that different observers notice different things, or draw different conclusions from their observations.

Expertise can be similarly subjectively perceived, but also includes relatively objective characteristics of the source or message (e.g., credentials, certification or information quality).

The latter corresponds to the first derivative of subjectively perceived beauty:

In the other some obscure material is either ineptly presented or is subjectively perceived to be gibberish due to a lack of preparation.

The aim is to ensure that measured loudness corresponds well with subjectively perceived loudness.

Schmidhuber's theory explicitly distinguishes between what's beautiful and what's interesting, stating that interestingness corresponds to the first derivative of subjectively perceived beauty.