Psychology 2990A/B Lecture Notes - Health Psychology, Abusive Power And Control, Sunscreen
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2990 Lecture# 3: The causes of death
Psychology in health
1. Healthy beliefs
2. Changing unhealthy behaviors
3. Knowing that we are ill
4. Patient-provider communication
- 1900 – acute infectious diseases in america Eg: influenza
- develop quickly; quickly lead to death
- today few ppl in N.america die from these diseases. Why?
- less likely to become infected, b/c…
- better personal hygiene, wash our hands better, bathe more
- better public sanitation (sewage, water)
- vaccines that inoculate us
- effective drugs to treat infections today
- so if you get infected, you can just go to the doc and be treated
Leading causes of death in N.america today
- heart disease, cancer and stroke
- aka “chronic diseases, b/c they develop slowly;no effective cure; live with
them for long time.
- Most of them are preventable disease (stem from unhealthy behaviors that
can be changed)
- Quit smoking!! (implicated in all three causes)
- 25% of all deaths from cancer can be prevented if ppl quit smoking
- 30% of all deaths could be prevented if ppl stopped smoking and eat healthy
- 50% of deaths could be prevented if they didn’t drink and drive, wore
seatbelts and didn’t speed.
- Wear condoms consistently (AIDs prevention)
- Regular exercise; limit alcohol, use sunscreen, early testing Eg: breast cancer
- Some of us might engage in some healthy behaviors, but not all
- Many deaths in these days are self-inflicted
Q: how can we encourage ppl to engage in healthy behaviors?
Health psychology offers 2 answers:
1. encourage healthy beliefs – which will translate into healthy behaviors
2. directly change unhealthy behaviors
Part 1: healthy beliefs
A. Basic idea
- unhealthy behaviors stem from unhealthy beliefs
- to change behavior, must change beliefs by encouraging :healthy” beliefs.
B. Health – relevant beliefs eg: to quit smoking
- what are the belifs for the smokers to hold, so they quit smoking?
1. General health values: I am interested and concerned about haing good
- if they don’t have this health beliefs then it is very likely that they will not
2. Belief in a “health threat” influenced by…
- perceived severity of threat (smoking causes lung cancer, which is deadly)
- though many smokers down play the severity of smoking
- perceived vulnerability to threat (I could die from lung cancer if I smoke)
- understand that they can be PERSONALLY hurt!
- But: “unrealistic optimism” (bad things happen to other ppl, not me)
- Most smokers belief that they are less likely to get lung cancer than the other
3. Response efficacy: the health behavior quitting will reduce the threat (if I
quit now, I wont die from lung cancer)
- how does the person know this?
- But: person might say “its too late for me, I have smoked too long, I’ll get lung
cancer even it I quit, so what is the point to quit”.
4. Self efficacy: person is capable of performing the healthy behavior eg: I
can do it!
5. Outcome beleifs: weigh costs and benefits of healthy behavior (quitting)
- if benefits exceed costs, then the person will try to quit
- if costs exceed benefits, less likely to try to quit
- Important in adolescents: don’t care about long term negative outcomes of
unhealthy behaviors Eg: I might die in 40 years
- Better to emphasize immediate costs (my teeth will be yellow, my clothes
will be smelly, I will have bad breath)
- Teenagers don’t think about the long term costs
6. Subjective norms (2 elements)
- Normative beliefs: what we think other ppl want us to do. Eg:
- family and doc say “yea” (quit)
- smoking friends say “no” (don’t quit)
- teenagers get conflicting normative pressures
Motivation to comply with these other ppl (can be high or low)
Eg: if I am more motivated to comply to my friends who are telling me to
smoke than I will smoke.
- Intervention:want to add normative pressures to quit and increase
motivation to coply (my family wants me to quit… and I really want to make
them happy by quitting)
- Adding more normative beliefs = increase motivation to quit.