Hall and Player Flashcards
What is the aim in Hall and Player?
to test if context had an effect on fingerprint identification by fingerprint experts
What was the sample and in Hall and Player?
A self-selecting sample of 70 fingerprint experts all working for Metropolitan Police Fingerprint Bureau
Their length of experience as experts ranged from less than three months to over 30 years
What was the sampling method in Hall and Player?
Volunteer sample
What was the method in Hall and Player ?
Laboratory experiment
What was the IV in Hall and Player ?
Low emotional context – allegation of forgery (victimless crime)
High emotional context – allegation of murder
What was the DV in Hall and Player ?
Whether the participant considered the finger mark was (i) identification – a match, (ii) not an identification – not a match, (iii) insufficient – not enough detail to undertake a comparison, (iv) insufficient detail to establish identity, some detail in agreement but not enough to individualise
Whether the participant would be confident to present the fingerprint as evidence at court.
What materials were used in Hall and Player ?
-£50 note with ambiguous fingerprint
-fingerprint magnifying glass
-crime scene report questionnaire
What was the procedure in Hall and Player?
-fingerprint scanned into £50 note, obscured image
-latent mark was only just identifiable
-separate sample of experts had confirmed that the mark was of poor quality
-size, clout and detail was typical of normal given evidence
-participants given envelope with a test mark card, 10 prints for comparison and examiners report
- all had fingerprint microscope and a Russell Comparator to compare images
- ask to complete like normal task, no time restrictions and were allowed to move around and talk but not about the case
What results did Hall and Player find ?
What conclusions did Hall and Player make ?
Fingerprint experts are able to deal with the fingerprint analysis in a non-emotional manner
