Case Study: Disgust and Phobia of Buttons

Classical Conditioning: A learning procedure in which associations are made between two stimuli.
- Neutral Stimulus (NS): Initially does not elicit a response.
- Unconditioned Stimulus (UCS): Elicits a predictable response without training.
- Unconditioned Response (UCR): Automatic or natural reaction to a stimulus without training.
- Conditioned Stimulus (CS): Elicits a response due to being paired with an UCS.
- Conditioned Response (CR): The learned reaction to a CS.

Expectancy Learning: Presentation of a previously neutral object/event associated with a negative outcome increases fear of that object/event.
- Example: Fear of exams leads to anxiety during classes.

Evaluative Learning: Individuals come to evaluate a neutral object negatively without being aware of the association with negative outcomes.
- Results in feelings of Disgust.
- Example: Feeling above lowly tasks, such as exam-taking.

Disgust is a distinct emotion from fear and can lead to the evaluation of stimuli as repulsive.
Conditioned experiences can result in irrational phobias combining disgust with fear.
Examples:
- Arachibutyrophobia: Fear of peanut butter sticking to the roof of the mouth.
- Arithmophobia: Fear of numbers.
- Koumpounophobia: Fear of buttons.

Research by Hepburn and Page (1999): Affirmed addressing disgust can aid in curing hemophobia (fear of blood).
Study by De Jong et al. (1997): Suggested reduction in disgust could ease fear of spiders.

Phobias classified under Anxiety Disorders in DSM-5.
Defined as persistent fear or anxiety that is excessively out of proportion to actual danger posed.
Types of phobias:
- Specific Phobias: Fear of a specific object or situation.
- Social Phobia: Fear of social situations.
- Agoraphobia: Fear of being in situations where escape might be difficult.

Many phobias may be rooted in evolution, supporting the nature argument in the nature/nurture debate.
- Example: Acrophobia (fear of heights) may relate to dangers faced by ancestors.

Koumpounophobia: Fear and aversion to buttons.
Notable case: Steve Jobs' aversion influenced the rise of touch-screen phones and fashion sense.
Symptoms:
- Aversion to sight, sound, or texture of buttons; some unable to tolerate certain button types.

Aim: Investigate classical conditioning's role in fear and avoidance of buttons, comparing:
1. Positive reinforcement therapy
2. Imagery exposure therapy

Clinical Case Study:
- Focused on one 9-year-old Hispanic-American boy who experiences koumpounophobia since age 5.
- Data collected through self-reports at Child Anxiety and Phobia program at Florida International University.
- Symptoms measured using a 9-point scale called “Feelings Thermometer.”

Phobia: Severely impacted daily functioning; boy unable to dress himself.
A hierarchy of feared stimuli was developed through discussions with the boy and mother.

Approach: Awarded for showing less fear; rewards assigned post successful handling of buttons.
Sessions: 4, lasting 20-30 minutes each.
- Objective data: Number of buttons touched + self-report distress ratings were measured.
- Hierarchy of fear respected, beginning with less feared buttons.

Sessions 5-11 focused on visualization techniques rather than real buttons.
Included disgust-related exposures and coping strategies.
- Exercises involved imagining buttons falling on him and discussing feelings about these images.

Initial success in increasing button handling numbers; however, overall feelings of disgust increased with each session.

Effective in addressing disgust; showed long-term reduction in distress levels associated with buttons.
From initial distress rating of 8 for button imagery falling on him, ratings decreased to 3 by the end of therapy.
Follow-ups at 6 and 12 months indicated minimal distress; no longer classified as phobic.

Treatment was deemed successful; cognitive and emotional aspects of disgust crucial for forming new associations with phobias.
Imagery exposure proved beneficial for long-lasting distress reduction.