Biological foundations of BHD readings Flashcards
What is a cross-sectional design in research?
A cross-sectional design examines people of different ages at a single point in time, providing a snapshot of each person at that age.
What is a major limitation of cross-sectional designs?
A major limitation is that they do not control for cohort effects, which can occur when groups from different time periods differ due to the era in which they grew up.
What is a cohort effect?
A cohort effect is a difference between groups of people from different time periods, affecting their experiences and knowledge based on when they grew up.
What is a longitudinal design in research?
A longitudinal design tracks the development of the same group of people over time, providing a series of observations at different ages.
Why is a longitudinal design preferable for studying developmental changes?
Longitudinal designs allow researchers to observe true developmental effects and changes over time, as they track the same individuals.
What is a potential problem with longitudinal designs?
Longitudinal designs can be costly, time-consuming, and may suffer from attrition, where participants drop out over time.
How can cross-sectional studies be useful despite their limitations?
Cross-sectional studies can be useful for research questions with low potential for cohort effects, such as comparing the performance of very young children on a task.
Why might longitudinal designs not always be feasible?
They can be impractical due to their length, cost, and the problem of participant attrition. Additionally, most longitudinal studies use observational rather than experimental designs, limiting their ability to infer cause-and-effect relationships.
What is the key issue with using a cross-sectional design in research on health?
A cross-sectional design provides a snapshot of different ages at a single point in time and does not account for cohort effects, which can lead to misleading conclusions about changes over time.
What is the difference between the mind-body relationship theories in ancient Greece and early Middle Ages?
Ancient Greeks like Hippocrates viewed health as a balance of bodily humours affecting both physical and mental states, while the early Middle Ages attributed illness to spiritual factors and divine punishment.
How did René Descartes’ view on mind-body interaction differ from previous theories?
Descartes proposed dualism, where the mind and body were seen as separate entities but capable of interacting, a departure from earlier integrated views of mind and body.
What factors are major contributors to improved public health in developed countries?
Major contributors include advancements in education, agriculture, sanitation, and wider social and environmental changes, rather than solely medical treatments.
How does behavior impact the prevalence of cancer deaths?
Between a third and half of cancer deaths are attributed to behaviors such as smoking and poor diet.
How did views of health change from the 18th century to the mid-20th century?
From an ideal of avoiding illness and living a long life to a focus on fitness to work and medical advances.
What is the World Health Organization’s definition of health?
A state of complete physical, mental, and social wellbeing, not merely the absence of disease or infirmity.