Related Experiment Video
Updated: Apr 26, 2026

Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker
Published on: December 18, 2014
Does a child's fear of needles decrease through a learning event with needles?
Natsuki Kajikawa1, Takami Maeno, Tetsuhiro Maeno
1Ibaraki Prefectural Central Hospital , Japan and.
Background:
Most children have a fear of needles. Suitable preparation can decrease the pain and fear of needles in hospitals; however, few have examined how such preparation affects healthy children. This study examined whether learning with needles decreases fear of needles and changes motivation to get vaccinations in school-age children and the possible association between fear of needles and motivation toward vaccinations.
Methods:
This study included children participating in the "Let's Be Doctors" event, which was held in 4 child centers in Tsukuba city, Ibaraki, Japan. In this event, children learned about injections and how a vaccine works, and injected a vaccine (water) into skin (sponge) using a real syringe and imitation needle. Data were collected just before and after the event by anonymous self-assessment questionnaires that used a 4-point Likert scale to assess fear of needles, motivation to get vaccinations, recommendation of vaccinations, and fear toward doctors among the children. Answers were divided into two categories for statistical analysis.
Results:
In total, 194 children participated in the event and 191 children answered the questionnaire (response rate 98.5%). We analyzed 180 subjects, comprising 79 boys (43.9%) and 94 girls (52.2%), mean age of 8.1 ± 1.0 years. The number of children reporting a fear of needles decreased from 69 (38.3%) before the event to 51 (28.3%) after the event, and those unwilling to get vaccinations decreased from 48 (26.7%) to 27 (15.0%). Children who reported fear of needles before the event were more unwilling to get vaccinations than those with no fear of needles (36 [52.2%] vs. 12 [10.8%]), while after the event the number of needle-fearing children unwilling to get vaccinations decreased to 19 (27.5%).
Conclusions:
Children's fear of needles and unwillingness to get vaccinations were decreased after experiencing a learning event with needles. The fear of needles is associated with a negative motivation to get vaccinations in children.
Related Concept Videos
Preparedness and Phobias
Classical Conditioning in Daily Life
John B. Watson and Rosalie Rayner famously demonstrated the development of fear through classical conditioning in their experiment with Little Albert. They paired the...
Avoidance Learning and Learned Helplessness
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
Desensitization and Tachyphylaxis
Behavior Therapy
Exposure therapy is a cornerstone of behavioral treatment for anxiety disorders. It involves systematic exposure to feared stimuli, either in real...
Vaccinations

