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What is the purpose of fingerprint analysis?
Helps to identify individuals in the justice system or just in a general context
What method did the lady in the video use: back and forth motion or twirl?
Twirl
How many hours were the beakers left in each condition?
12 hours
Which condition provided the most clear fingerprints?
The heat condition
Where do latent fingerprints come from?
Oils, sweats and other secretions from the skin
What happens to latent fingerprints when they are heated?
The clarity decreases due to the oils and water evaporating
Why does having the participants use lotion help with the lifting of the fingerprints?
Leaves an oily layer to better help produce the print
What affects the way that the molecules remain intact?
Temperature
What can affect latent fingeprints?
Contact time, force of contact, and the surface
Based on the study by Stephanie M. Ibrahim what temperatures had the most effective lifts?
32 and 50 degrees fahrenheit
What are the three confounding variables?
Amount of time, powder used, and condensation
Why is it important that the fingerprints contain DNA?
Allows individuals to trace back records of people that are convicted