A Master of Science is usually granted for studies in sciences, engineering, and medicine.
 The slave is often expected to perform sexually, though typically many relationship-oriented dynamics are also clearly negotiated, including clothing, diet, speech restrictions, household affairs and schedules, though the details may be left to the master or mistress
 Such a collar is generally not removed except for practical reasons such as medical or security requirements, unless or until the relationship is dissolved; however, a slave is sometimes permitted to wear a more subdued (or less obtrusive) one outside of the home  for example, during work or in social situations with people who may otherwise feel uncomfortable

