Related Experiment Video
Updated: Mar 30, 2026

06:24
Minimal Erythema Dose MED Testing
Published on: May 28, 2013
43.2K
Testing children's ability to correctly use the "Shadow Rule" for sun protection
Owen Brandon John Carter1, Brennen William Mills1, Gavin Noel Mazzucchelli1
1a Edith Cowan University , Joondalup , Australia.
International Journal of Environmental Health Research
|November 19, 2015
Summary
Ten-year-old children can effectively use the "Shadow Rule" (SR) to gauge sunburn risk. They accurately interpreted shadow length relative to height, indicating the SR
Area of Science:
- Pediatric dermatology
- Environmental health
- Risk assessment
Background:
- The
- Shadow Rule
- (SR) is a simple mnemonic for assessing sunburn risk based on shadow length.
- Questions exist regarding the public's ability to accurately apply the SR.
Purpose of the Study:
- To evaluate the capability of 10-year-old children in applying the
- Shadow Rule
- for sunburn risk assessment.
Main Methods:
- 76 children were taught the SR and assessed on their ability to estimate shadow length relative to height.
- Children estimated shadow lengths at various angles and interpreted SR guidance.
- A doll's shadow was used to test estimation at 10 randomized angles.
Main Results:
- Children found it most challenging to judge shadow length when it equaled their height.
- High accuracy was observed at other angles, with 92% correct SR interpretation on average.
Conclusions:
- Ten-year-old children demonstrate the capacity to apply the SR, suggesting adults can too.
- Further research is needed to determine if SR education leads to behavioral changes in sun protection.
Related Concept Videos
Photoreceptors and Plant Responses to Light
29.0K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
29.0K
Blinding
4.1K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
4.1K
Blind Procedures
13.9K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
13.9K

