Psychology 2410A/B Chapter Notes - Chapter 6: Moro Reflex, Arnold Gesell, Primitive Reflexes
17 Sep 2016
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Most 19th century psychologist stated that newborns and young infants experience a confusing perceptual world, either perceive nothing or can make little sense of the stimulation to which they are exposed. Basic visual capacities issue with pinpointing what baby is perceiving . Pl technique: two stimuli are presented, watch babies eyes to determine where infant is looking looks at one stimulus longer than other, conclude can tell the difference. Reason that pl works: infants have spontaneous looking preferences; they prefer to look at certain types of stimuli. Another method for measuring visual acuity involves measuring an electrical responses called the visual evoked potential (vep) Recorded by disk electrodes over the visual cortex, is the pooled response of thousands of neurons that are near the electrode infants look at a gray field, which is briefly replaced by either a grating or checkerboard pattern. Vep provides objective measure: results in higher measurements of acuity.
