Held And Hein Kitten Carousel

Front 1

Neonatal Deprivation

Back 1

Restricting development (such as visual experience) of newborn animals.

Front 2

Depth Perception

Back 2

Ability to judge the distance of an object

Front 3

Visually Guided Paw Placement Test

Back 3

The kitten was held by the experimenter with its head
and forelegs free and was carried down to the edge of the table.

Front 4

Blink to an Approaching Object

Back 4

The experimenter brought his hand quickly towards the kitten’s face (stopping just in front of it)

Front 5

Avoidance of a Visual Cliff

Back 5

The kitten is placed on the central ‘bridge’ where it can stay still or walk onto the ‘shallow’ or ‘deep’ side.

Front 6

Gondola

Back 6

Container that housed the passive cat during the experiment.

Front 7

Plasticity

Back 7

Human brain's ability to change the way it functions in response to environmental influences.

Front 8

Dependent Variable tests (3)

Back 8

Avoidance of a Visual Cliff
Visually Guided paw placement
Blink to an approaching object

Front 9

Additional Tests (3)

Back 9

Pupilliary reflex to light
Tactual paw placement
Visual pursuit of a moving object

Front 10

Pupilliary reflex to light

Back 10

A torch beam was moved across the eye and the change in pupil size was noted.

Front 11

Tactual paw placement

Back 11

The kitten was held as in the paw placement test but its front paws were put against the vertical surface of the table.

Front 12

Visual pursuit of a moving object

Back 12

The experimenter’s hand was moved slowly in front of the kitten. The movement of the it’s eyes was recorded.

Front 13

Qualitative Observation of results

Back 13

More active cats tend to develop faster.

Front 14

Results for visual cliff test (shallow/deep) for both active and passive cats.

Back 14

Active: 12/0
Passive: Random

Front 15

What did they do with the Passive cats after the experiment?

Back 15

They placed the P cats in a continuously illuminated room for 48 hours and left them free to roam about.