Class Notes (835,243)
United States (324,066)
PSY 344 (34)
Davenport (34)
Lecture 15

PSY 344 Lecture 15: Estimator Variables and System Variables.
Premium

3 Pages
77 Views
Unlock Document

Department
PSY - Psychology
Course
PSY 344
Professor
Davenport
Semester
Spring

Description
Psych 344 4/21/17 Psych and the Law Estimator Variables and System Variables. A. Estimator Variables - Characteristics of the perpetrator - Distinctiveness- tattoos, scars, moles etc. - Man who robbed bank put tinfoil on their teeth to disguise. Later that was the only thing the teller could remember about them - Disguises-cover hair/ hairline= most common. Somehow covering hair changes our perception of other facial characteristics. - No hat= eyewitness recognizes with 45% accuracy rate. Hat= only 27% correct identification rate. - Defendant and eyewitness race—both important. When defendant and eye-witness same race- recognizes easier - Cross race effect-when eyewitness and defendant different race- accuracy goes down. When different = 1.5x more likely to make incorrect identification . - Small decline if you grow up in a different culture/ greatly exposed to . - Totally different when trying to recognize voice. Different process. B. System variables- factors that influence eyewitness memory that happen after the crime. (how tested/questioned.) Related to factors that the legal system can control - Retention interval-how long after the crime has occurred is the eye witness asked to identify the defendant? - The sooner asked, the better/ more accurate. - Studies suggest that our memories begin to decay immediately. Within 24 hours we forget about half. - After certain amount of time, remembering seems to go through a peak. Ex: two months later. This is inaccurate. This is false information/ memory. Fills in gaps of information—misinformation effect. Ex: police unwittingly give information to the defendant and they then “remember” that info later. - Questioning/ interviewing of EW—way of police going about questioning, wording, framing etc. - Wording of questions...Loftus and Palmer (1974)—Palmer changed verbs in study. “Crashed” “Bumped” or “Smashed” Participants estimated higher speeds for “crashed” than “bumped” also misremembered glass in “crashed” rather than “bumped.” - Leading questions- adding info may have otherwise not hat ex: “was the hat red?” - Word choice- ex: Preowned car rather than used—preowned makes it sound better. = Word choice influential - Mugshots- used to help witnesses remember who saw. Witnesses flip through books of hundreds and hundreds of defendants and try to ID them. - Unconscious transfer- mugshots. Someone’s face may start to look familiar. Can misremember where see face. Ex: Did I see it in the book o
More Less

Related notes for PSY 344

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit