Ageing and the visual spectrum

Question

HYPOTHESIS:
IF a group of people, with various ages, were tested on how they see colors

THEN the older subjects (older than 25) would see primary colors

COMPARED TO the younger subjects (less than 12), who would see secondary colors

BECAUSE secondary colors are harder for older human's eyes to process.

Procedure

Procedure

subjects took color blindness screening test

Procedure (Cont.)

• Subject looks at the first color for one second
• Subject answers first survey question
• Repeat process six times for the next six colors
• Subject fills out name, age, and signature
• Repeat process for other age groups (10 subjects each)

Results

Results

Results

GREEN-BLUE

(Less than 12)
Green:10
Blue:0

(12-25)
Green:8
Blue:2

(Greater than 25)
Green:6
Blue:4

VIOLET

(Less than 12)
Blue:10
Purple:0

(12-25)
Blue:10
Purple:0

(Greater than 25)
Blue:9
Purple:1

AQUA

(Less than 12)
Green:2
Blue:8

(12-25)
Green:4
Blue:6

(Greater than 25)
Green:6
Blue:4

RED-ORANGE

(Less than 12)
Red:4
Orange:6

(12-25)
Red:4
Orange:6

(Greater than 25)
Red:3
Orange:7

YELLOW-ORANGE

(Less than 12)
Yellow:3
Orange:7

(12-25)
Yellow:3
Orange:7

(Greater than 25)
Yellow:1
Orange:9

DANDELION

(Less than 12)
Yellow:10
Orange:0

(12-25)
Yellow:10
Orange:0

(Greater than 25)
Yellow:9
Orange:1

SPRING GREEN

(Less than 12)
Green:10
Yellow:0

(12-25)
Green:7
Yellow:3

(Greater than 25)
Green:5
Yellow:5

Results (Data)

REsults

Data Table shows results for first 3 colors

Second half of data table shows results of other colors

Conclusion

• Hypothesis was rejected
• No preference to primary vs. secondary
• Ageing has some effect on color perspective
• Yellows might effect younger and older
• Variation in time to answer questions

Procedure Evaluation

• PowerPoint for the survey
• LCD screen vs matte screen
• Angle on computer and lighting
• Extremes of ages
• More colors

Questions?