Lecture 6 - Infant Perception

• preferential looking
• cross-modal preferential looking (CMPL)
• forced choice preferential looking (FPL)
• visual habituation
• violation of expectation (VOE)

• remote eye tracking
• head mounted eye tracking

looking longer at one display shows evidece that the two displays are different

• babies as a group look longer at a schematic/real face than a scrambled face
• babies will look longer at a pic/video of mom than someone else
• babies look longer at moving/dynamic display than static display

combining info from two or more perceptual modalities (vision+hearing+touch+etc)

• super powerful test
• continuously presenting stimuli systematically so the baby has to keep choosing (ex. stripes)

looking time decreases over repeated presentations and so does the change in heart rate

assume infants will look longer at something unexpected

• infants look at what interests them
• they look where they expect interesting events to occur

allows researchers to study the natural vision in the real world rather than having babies stare at a screen (more ecologically valid)

• preferential looking
• habituation
• VOE
• CMPL

• head mounted eye tracking
• remote eye tracking
• FPL (need to be well trained)

• head mounted + remote eye tracking
• FPL

FPL

• NONE
• cannot infer emotions from babies' looking time