what is shallow processing?
the cognitive processing of a stimulus that focuses on its superficial, perceptual characteristics rather than its meaning
- e.g. Can a man marry his widow’s sister?
- to be a widow the man must be dead
- around only 30% notice this
Traditional model and assumption
why engage in shallow processing?
what did MacDonald, Pearlmutter, and Seidenberg (1994) acknowledge?
the communicative goal of the listener can be achieved with only a partial analysis of the sentence, however, they viewed these as ‘degenerate cases
evidence for shallow processing
what is incomplete semantic commitment?
we may not be committing fully to exactly what the word refers to
e.g.
1. Mary bought a brand new Hitachi Radio
2. It was in Selfridge’s window
what is it?
- The particular radio that she bought, so after she bought it, it was gone?
- The type of radio, so after she bought it, it was still there?
3. Later, when Joan saw it, she decided too that it would be a good purchase
Garden path sentences
e.g.
While Anna dressed the baby played in the crib.
- Did the baby play in the crib?
- Did Anna dress the baby?
Pragmatic normalisation
e.g. who is the ‘do-er’?
1. active sentences
a. The dog bit the man (99% accurate)
b. The man bit the dog (99% accurate)
The survivors problem (Barton & Sanford, 1993)
read scenario:
There was a tourist flight travelling from Vienna to Barcelona. On the last leg of the journey, it developed engine trouble. Over the Pyrenees, the pilot started to lose control. The plane eventually crashed right on the border. Wreckage was equally strewn in France and Spain. The authorities were trying to decide where to bury the survivors.
asked: Where should the survivors be buried?
The survivors problem (Barton & Sanford, 1993) adaptation
failure to detect semantic anomalities
Why do people miss these anomalies?
Eye-tracking anomaly detection Bohan and Sanford (2008)
conclusions of Eye-tracking anomaly detection
Anomaly detection and ERPs
example of ‘Hard-to-detect’ anomaly
“Child abuse cases are being reported much more frequently these days. In a recent trial, a 10-year sentence was given to the victim, but this was subsequently appealed.”
- 3 conditions: non-anomalous condition in which a care order was given to the victim, Second anomalous condition in which a sentence was given to the victim and the participant reported that this was an anomaly, third condition in which the sentence was given to the victim, but the participant did not detect the anomaly
compared to ‘Easy-to-detect’ anomaly
Findings of Anomaly detection and ERPs
easy-to-detect
- clear N400 effect for the easy-to-detect anomalies
hard-to-detect
- no N400 effect here, suggesting that these anomalies are not processed in the same way as ‘easy-to-detect’ anomalies
logical subordination (Baker & Wagner, 1987)
Linguistic focus (Bredart & Modolo, 1988)
the use of what is known as a ‘cleft construction’. A cleft construction is just the use of the phrase “It was X”, in order to answer an implied question
e.g.
- It was Moses who took two animals of each kind on the Ark
- This cleft construction answers the question: WHO took the animals on the Ark?
text-change detection
- participants are presented with a piece of text that they should just read normally. They are then shown the text again, and sometimes one of the words has changed
results: people were more likely to notice the change when the key word was in focus than when it wasn’t, suggesting that they had processed the word more deeply when it was in focus than when it was not.
Discourse focus (Sturt et al. 2004)
text-change detection
The use of attention-grabbing devices
Anomaly detection:
- MOSES decided to take two animals of each kind on the Ark (86.5% detection).
- Moses decided to take TWO animals of each kind on the Ark (68.3% detection).