Surveys

"TRUE"

The major weakness of epidemiologic studies is the inability to experimentally establish cause and effect.

"TRUE"

"TRUE" or "FALSE"? Open-ended items items are most difficult to analyze in a questionnaire study.

"TRUE"

"TRUE" or "FALSE"? The practice of taking a small random sample of nonrespondents to a survey is primarily intended to determine whether the nonrespondents are a different population from the respondents.

"TRUE"

"TRUE" or "FALSE"? This questionnaire item (which uses a yes/no format): "Do you use objective test items or essay items?" violates the item construction rule that short questions are easier to understand.

"TRUE"

"TRUE" or "FALSE"? To help ensure an acceptable return rate in a questionnaire study, the researcher should use follow-up letters or e-mails.

"TRUE"

"TRUE" or "FALSE"? To help ensure an acceptable return rate in a questionnaire study, the researcher should use follow-up phone calls.

"TRUE"

"TRUE" or "FALSE"? When a national poll reports that its survey has a margin of error of 3%, it is referring to error due to sampling.

Delphi survey method

DEFINITION A survey technique that asks a jury of experts to respond to a series of questionnaires in order to reach a consensus about important issues.

normative

FILL THE BLANK A researcher tests the knowledge about nutrition of 10,000 school children from the southwestern United States, and the scores are transformed into percentiles by grade level. This type of research is a ________ survey study.

Likert-type

FILL THE BLANK Scaled responses to questionnaire items such as strongly agree, agree, no opinion, and so on are referred to as ________ scale items.

INTRUDER: writing cover letter 1. determining objectives 2. delimiting the sample 3. writing items 4. pilot testing

FIND THE INTRUDER & PUT IN THE CORRECT SEQUENCE The steps for developing a questionnaire are, in chronological order: - writing cover letter - pilot testing - determining objectives - delimiting the sample - writing items