Week 9 - Thursday Flashcards
(30 cards)
What’s the right type of analysis to use when analyzing the correlation between eye witness confidence and accuracy?
CAC Analysis
What statistical analysis was used that made people think sequential lineups were more effective than simultaneous?
Diagnosticity ratio.
What was the right type of analysis to use when comparing sequential vs. simultaneous lineups?
ROC Analysis
What does a liberal response bias mean?
A weaker memory signal strength is able to pass the response criteria, meaning we’re more likely to say something matches are memory.
Which point(s) on the ROC reflects the conservative criterion?
The left most points.
Which point on the ROC reflects the liberal criterion?
The rightmost points.
What does a single ROC mean?
One of the curves on a ROC graph.
Moving to the left/right on a single ROC refers to what concept?
Response bias. How willing you are to say that’s a hit. (I think).
Moving to a higher/lower ROC refers to what concept?
Discriminability.
A single point on an ROC curve has a particular HR/FAR.
What is the name for the statistic that describes the relationship between hits and false alarms for this single point?
Diagnosticity ratio.
Which is the most important when choosing one lineup procedure over the other: response bias or discriminability (moving high/lower on the ROC)?
Discriminability, how far away it is from chance performance.
What is discriminability?
How far away it is from chance performance.
Conservative responding is represented by the points furthest to the [left/right] on the ROC plot?
The left.
In psychology, what do we mean by forgetting?
Something being encoded and losing access to it, either because the memory is gone or we can’t access it.
How would Ebbinghaus test his own memory?
Memorizing nonsense syllables.
What did they do in the Permastore test?
Gave people a Spanish test. They only took a year of Spanish.
Divided people into groups depending on how long it had been since they’d taken the course.
Plotted a 50-year retention function.
What were the results of the permastore test?
Retention drops after just a few years. From then on, it levels off.
What was the significance of the Permastore test?
They realized some of the information that the people learned from Spanish class remains in a permastore (just in their memory).
Why do we forget?
Decay and interference.
What is Long-Term Potentiation?
The synapse is physically changed following an experience, and that change is the neural basis of memory. It strengthens the connection between two neurons (more excitability).
What are the types of synaptic changes you see with LTP?
- New receptors inserted into post-synaptic membrane.
- Increased number of synapses.
What is cellular consolidation?
Cells wiring and consolidating together.
What is retroactive interference?
Forgetting old memories because you’re forming new memories.
What is proactive interference?
Forgetting new memories because of old memories.
