WEEK 4 L8.1 surveys Flashcards
survey challenges about measurement
process
- measuremet validity
- measurement reliability
concept construct => measurement => collect responses
survey challenges about representation
process
- coverage of pop.
- sampling error (during the selection of respondents- does it introduce a systematic bias)
- non response (are those who don’t respond from a specific group)
target population => sampling frame => sample => responents
types of surveys
- cross sectional: they give you a cross section of the population in one time frame ‘snapshot’ can only allow statistical control
- longtidunial: surveys a population at two or more time periods, and there are 4 versions of that
a. cohort
b. panel
c. rolling cross section
d. trend study
cohort and panel studies are a subcategory of (..) studies
longtidunial
longtidunial cohort study
the same survey is conducted several times each time with a different sample (pooling cross sectional time series)
longtidunial panel survey
when the same participants are questioned at multiple time periods, a cross-lagged causal analysis
- clearly measure changes over time
longtidunial rolling cross section
starting with a very large cross-sectional sample, but instead of interviewing responents at the same time, the interviews are spread out. every day a small subset from the full sample are interviewed.
captures dynamic changes and trends.
disadvantages of rolling cross sectional
lots of time and money required
types of longtidunial surveys
- cohort (pooled cross sectional)
- panel survey (crossed lagged causal analysis)
- rolling cross section (dynamic changes)
- trend study (aggregated time series)
longtidunial trend study
what makes it different?
in the first three types, you still have responses from individual responses, in trend study, you only take aggregate outcomes from seperate polls.
unethical polls
push poll- purpose is persuasion
frugging and sugging- survey is a marketing tool
difference between cohort, and panel
in cohort, a new sample is drawn every time (rs is written), you can’t track individual changes, but you can observe changes at the aggregate level.
in panel, you only do random selection once (the same people are interviewed repeatedly)
age-period-cohort models
tthey can disentangle age effects from period affects, and from cohort effects.
like from young vs. old
critical events that influence everyone
attitudes tied to a specific birth cohort like milennials etc.
which type of survey allows for cross time lagged causal analysis?
longtidunial panels
(1) allows for individual level analysis
(2) allows for conclusions about groups of people
1: panel
2: cohort