The document summarizes an experiment conducted in 1960 called the "visual cliff" experiment. The experiment was designed to test whether depth perception is innate or develops over time. In the experiment, infants between 6-12 months old were placed on a Plexiglas table that had a deep side and shallow side to test if they could perceive depth. All of the infants refused to cross to the deep side and crawled to their mothers on the shallow side, showing they have an innate perception of depth from an early age. The visual cliff experiment influenced subsequent studies on human development and perception.

1. Watch out for
the visual cliff
Sharshebaeva Aizhan

2. Plan
 Theoretical proposition
 Method
 Results and Discussion
 Criticism and Subsequent
 Recent application
 Conclusion

3. Theoretical proposal
 Depth perception-the ability to perceive spatial relation in 3D
 Is the depth perception inborn or does it develop over time?
 In 1960 came up with visual cliff idea

4. Method

5. VIDEO:
 https://www.youtube.com/watch?v=DrzmvI6iMrE

6. Results
 36 infants
 6 to12 months
Deep side Shallow side
All babies refused to cross!! All crawled to moms!!
HESISATION NO HESISATION

7. -never made a mistake
-no error was made
-have a bad perception of
depth
-no error was made

8. Criticism and subsequent
 Experiment with younger infants ages 2 to 5
months
 Experiment with 1 years old infant and non verbal
communication

9. Recent application
Gibson and Walk`s invention exerts a influence on
current studies of human development,
perception, emotion and mental health
 Bridge with various width
 Visual reality for autistic children

10. Conclusion
 Behavioral scientists continue to debate the
question whether this and other perceptual
abilities are innate or learned.
 For us as future psychologist it is a good
reason to continue researchers!!

11. Questions ?????
Who did create a “Visual cliff”?
What is a “Visual cliff”?
What was a main goal of this experiment?