A letter of reprimand is a letter summarizing an isolated incident of unacceptable work conduct. It may also be used to summarize previous verbal counseling sessions, or warnings, or to point out that unacceptable work performance is continuing.
Meaning and definition of single-loop learning : Single-loop Learning: Single-loop learning involves using knowledge to solve specific problems based on existing assumptions, and based on what has worked in the past. If a room is becoming too cool, one would adjust the thermostat setting, not question whether the air-conditioning system is over designed.
In the case of single-blind experiments, it is only the research subjects who are kept unaware of their status as members of the control or experimental groups. This is a useful experimental design if the researchers must be aware of who is in which group.