New paper! People often do not remember information they just searched for (https://link.springer.com/article/10.3758/s13421-023-01465-9).
Subjects were asked to draw the contents of their memory immediately after searching for a target in a natural scene
Experiment 1: For 43 trials, subjects searched for wall-arts or pillows, remember their locations, and draw the locations on a blank canvas. Then they were unexpectedly asked to actually draw the room they had just viewed. Subjects could also draw an X to indicate no memory. 2/
A group of raters evaluated each drawn image to see if they could match it to the source image, with two similar images as foils. Result: the drawn images from the surprise trial could not be matched, but those from the following trials could be reliably matched.
In experiment 2 we asked a new set of subjects to draw the target they had just located (a piece of wall art) instead of the whole scene – we wondered if perhaps they also had poor memory of the target itself, which previous work on Attribute Amnesia suggests.
Again, raters couldn't match the sketches from the surprise trial, but sketches from later trials were better. This was true for both gist and exact match probes! Thus, subjects can locate a target without building a memory that can be recalled just 1 second later.
Note that we used the same canvas for the presurprise and surprise trials so that subjects already knew how to use the drawing tool when the surprise question was first asked. To test if this poor memory was just due to the interruption of the unexpected question we ran a control.
In Experiment 3, we had subjects draw the target scene periodically so that they knew to expect it, and then provided an interrupting popup prompt to see if this would damage their memory, and it didn’t! Thus we conclude that the poor memory on the surprise reflects not an effect of cognitive interference from being surprised, but rather a weaker encoding of the scene and the target. The implications are that we can engage in a search task without building a memory of either the scene or target.
This is a generalization of the attribute amnesia (AA) phenomenon, which dissociates attentional selection from memory encoding. It is the first time that AA is shown for visual recall rather than recognition, which is important because >
Prompts like “draw what you remember” are very easy to process in an unexpected prompt whereas a recognition probe requires subjects to project memory into a discriminative space that is (perhaps) hard to do on-the-fly.
Thanks to everyone who worked on this, especially the lead author Nicolas Cardenas-Miller, a student who is going on to study language for the rest of his undergraduate education.