In psychology, cleanliness refers to a personality trait or behavior pattern characterized by a strong desire for cleanliness, orderliness, and organization. Individuals with a high level of cleanliness may exhibit compulsive or obsessive behaviors related to cleaning or maintaining their environment.

Examples of cleanliness in psychology may include:

  1. Excessive hand washing or showering to avoid germs or contamination
  2. Repeatedly checking that doors or windows are locked or appliances are turned off
  3. Feeling anxious or distressed when things are out of place or disorganized
  4. Compulsively cleaning or straightening objects, even if they are already clean or orderly

Other similar personality traits or behaviors include:

  1. Obsessive-compulsive disorder (OCD): This is a mental health disorder characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that can significantly impact one's daily life.

  2. Perfectionism: This is a personality trait characterized by a strong desire for perfection and order, often leading to high levels of self-criticism and anxiety when things are not "perfect."

  3. Hoarding disorder: This is a mental health disorder characterized by the excessive acquisition and difficulty discarding of possessions, leading to clutter and significant distress or impairment.

  4. Body dysmorphic disorder (BDD): This is a mental health disorder characterized by a preoccupation with perceived flaws or defects in one's appearance, often leading to compulsive behaviors such as excessive grooming or avoidance of social situations.

It is important to note that while cleanliness can be a positive trait, when it becomes excessive or begins to interfere with one's daily life, it may be a sign of a more serious mental health issue and should be addressed with the help of a mental health professional.