Unit 2 - Temperature and Lighting

Question 1

what temperature activity did we do in class?

Answer 1

put hands in either cold temperature or thermoneutral water, have to race to make a bracelet
*cold is supposed to have detrimental impacts on a fine motor task and make you slower but trevor just sucks at making bracelets hehe

Question 2

list the temperature activity instructions

Answer 2

1) baseline hand temperature 30 seconds
2) submerge hands in water
3) towel dry (but not warm)
4) post-water hand temperature
5) Fine motor task: make a bracelet for your competitor containing 20 beads & triple knot to finish - time to completion + errors (dropping 1 bead = error)

Question 3

Fox (1967) concluded that cold can affect performance in 5 ways: (Temperature Physiological Effects)

Answer 3

1) Tactile sensitivity
2) Manual Performance
3) Tracking
4) Reaction time
5) Complex behaviours

Question 4

describe temperature physiological effects

Answer 4

limb temperature, rather than overall body temperature, affects motor ability because of effects cold has on muscular control
- it causes a loss of cutaneous sensitivity
- changes in the characteristics of synovial fluid in the joints
- loss of muscular strength

Question 5

describe the mixed reviews on manual dexterity

Answer 5

• finger performance is limited at 13C (clark, 1961)
• no influence at 16C (clark, 1961)
• significantly reduced at 10-13 C (gaydos & dusek, 1958)
• 20C affects hand function (Lee et al., 2012)

Question 6

what does evidence generally say in relation to temperature cognitive effects?

Answer 6

some evidence is also available to suggest that cold temperature interfere with an individual’s ability to estimate time accurately

Question 7

describe the evidence on cold temperatures interfering with an individual’s ability to estimate time accurately

Answer 7

• baddeley (1966) has 20 amateur scuba divers count up to 60 at what they considered to be a 1-second rate
  Results: after the divers had entered the 4C water, their estimation of time increased
• suggests that cold is likely to affect the efficiency of individuals carrying out complex tasks (at least with time estimation)
• due to the distraction cause by the stressing effect of the cold

Question 8

in the evidenec on scuba divers, what was the distractor?

Answer 8

the stressing effect of the cold

Question 9

what is typical core temperature?

Answer 9

37.1 +/- 0.3C

Question 10

the body’s core temperature must be kept within _

Answer 10

narrow limits

Question 11

what happens when core temperature homeostasis is disrupted?

Answer 11

• core temperature increase/reduction of 5C lead to death
• small departures from our core temp homeostasis can lead to reductions in both motor and cognitive performance

Question 12

even very small changes in the thermal environment can affect _

Answer 12

an individual’s comfort - this room = hot

Question 13

light can have an impact on our _

Answer 13

sleep quality, cognitive performance, and physical performance

Question 14

what class activity did we do on lighting and human performance?

Answer 14

redesigning traffic lights for the colour blind population

Question 15

who created a proposed traffic light solution for the colour blind population?

Answer 15

Stille & Lyons, 2018

Question 16

describe: a proposed traffic light solution for the colour blind population

Answer 16

• individuals with colour blind deficiencies vs individuals without
• presented with new traffic light compared to traditional and verbally respond “stop” “go” “slow” as quickly * as accurately as possible
• preliminary results shows individuals with colour vision deficiencies (CVD) reacted faster and with fewer errors to the new system
• no difference in individuals without CVD