Maintenance refers to the extent to which a learner continues to perform a target behavior after a portion or all of the intervention has been terminated Mr Johnsons quiz is specifically designed to check if skills that were taught previously before the summer break are still present in the students repertoire after a period without direct instruction This is the hallmark of assessing maintenance Generality is a broader concept that includes maintenance as well as stimulus generalization performing the behavior in different settings with different peoplematerials and response generalization performing different but functionally equivalent behaviors While maintenance is a component of generality maintenance is the most precise answer for assessing retention over time after instruction has ceased Probing typically involves presenting a task or situation to assess an individuals current performance level on a skill that has not yet been taught or to check for the presence of a skill in their repertoire before intervention Mr Johnson assumes these skills were taught he is checking for their retention Magnitude refers to the force or intensity of a behavior which is a dimension of behavior but not what Mr Johnson is primarily assessing regarding students retention of previously learned academic skills