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PERCEPTUAL ASYMMETRY AND MEMORY RETRIEVAL IN 3-MONTH-OLD INFANTS
 

Summary: PERCEPTUAL ASYMMETRY AND MEMORY
RETRIEVAL IN 3-MONTH-OLD INFANTS
Scott A. Adler
Sabra lnslicht
Carolyn Rovee-Collier
Peter C. Cerhardstein
Rutgers University
In visudl sedrc-h tasks with ddults, the presence of d kdture is detected more rapidly thdn its dbsencc. In
two experiments, we dsked if perceptudl asymmetry dffetb the detection of cffcctive retricvdl tuei.
Three-month-ok& ledrned to kick to move d mobile tlispldying either KS (fedture present) or Ps (fcdturc
dbsent), ant1 these same stimuli were used ldter ds retricvdl cues during d long-term retention test. ln
Experiment 1, infdnts were tested dfter 24 hrs with d singlr P dmitlst six Rs or vice versd. In cone-ortldntc
with feature integration theory (Treisman, 19061, the fedturc-present target popped out while the fed-
turc-dbsent target did not. In Experiments 2A-2L3, infdnts were tested dfter 24 hrs with novel homogc-
neous mobiles. Although the K mobile wds not dn effertivc retrievdl C-W for P-trdinetl infdnts, the I'
mobile was dn effective retricvdl cue for R-trdined infdnts. Even dfter only 1 hr, infdnts fdlletl to tliscrimi-
natc the P test mobile from the R trdining mobile indicdting thdt they hdtl forgottcxn the tdil of the R ~5
rdpitlly ds this short tleldy. These findings reveal thdt per<-eptudl dsymmctry dlnnc tloc~ not complctc,ly
detrrmine rrtrieval from long-term memory. Rdtht'r, whether the tletdil that diffc~rcntidtt~\thcl it-d-
ture-present stimulus from the fedture-dhsent stimulus ib dcccssible to working memory nec.tls to h? con-

  

Source: Adler, Scott A. - Centre for Vision Research & Department of Psychology, York University (Toronto)

 

Collections: Biology and Medicine