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Exam2
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| Question | Answer |
|---|---|
| Experiment | Research approach in which one variable is manipulated and the effect on another variable is observed. |
| Causal Research | Research designed to determine whether a change in one variable likely caused an observed change in another. |
| Concomitant Variation | Statistical relationship between two variables. |
| Appropriate Time Order of Occurrence | Change in an independent variable occurred before an observed change in the dependent variable. |
| Field experiments | Tests conducted outside the laboratory in an actual environment, such as a marketplace. |
| Laboratory experiments | Experiments conducted in a controlled setting. |
| Internal validity | Extent to which competing explanations for the experimental results observed can be ruled out. |
| External validity | Extent to which causal relationships measured in an experiment can be generalized to outside persons, settings, and times. |
| History | Intervention, between the beginning and end of an experiment, of outside variables or events that might change the dependent variable. |
| Maturation | Changes in subjects occurring during the experiment that are not related to the experiment but which may affect subjects' response to the treatment factor. |
| Instrument variation | Changes in measurement instruments that might affect measurements. |
| Selection bias | Systematic differences between the test group and the control group due to a biased selection process. |
| Mortality | Loss of test units or subjects during the course of an experiment, which may result in a nonrepresentativeness. |
| Testing effect | Effect that is a by-product of the research process itself. |
| Regression to the mean | Tendency of subjects with extreme behavior to move toward the average for that behavior during the course of an experiment. |
| Randomization | Random assignment of subjects to treatment conditions to ensure equal representation of subject characteristics. |
| Physical control | Holding constant the value or level of extraneous variables throughout the course of an experiment. |
| Design control | Use of the experimental design to control extraneous causal factors. |
| Statistical control | Adjusting for the effects of confounded variables by statistically adjusting the value of the dependent variable for each treatment condition. |
| Experimental design | Test in which the researcher has control over and manipulates one or more independent variables. |
| Treatment variable | Independent variable that is manipulated in an experiment. |
| Experimental effect | Effect of the treatment variable on the dependent variable. |
| Contamination | Inclusion in a test of a group of respondents who are not normally there - e.g.; buyers from outside the test market who see an advertisement intended only for that hose in the test area and enter the area to purchase the product being tested. |
| Pre-experimental designs | Designs that offer little or no control over extraneous factors. |
| One-shot case study design | Pre-experimental design with no pretest observations, no control group, and an after measurement only. |
| One-group pretest-posttest design | Pre-experimental design with pre- and postmeasurements but no control group. |
| True experimental design | Research using an experimental group and a control group, to which test units are randomly assigned. |
| Before and after with control group design | True experimental design that involves random assignment of subjects or test units to experimental and control groups and pre- and postmeasurements of both groups. |
| after-only with control group design | True experimental design that involves random assignment of subjects or test units to experimental and control groups, but no premeasurements of the dependent variable. |
| Quasi-experiments | Studies in which the researcher lacks complete control over the scheduling of treatments or must assign respondents to treatments in a nonrandom manner. |
| Interrupted time-series design | Research in which repeated measurement of an effect interrupts previous data patterns. |
| Multiple time-series design | Interrupted time-series design with a control group. |
| Test market | Real world testing of a new product or some element of the marketing mix using an experimental or quasi-experimental design. |
| Measurement | Process of assigning numbers or labels to persons, objects, or events in accordance |
| Rule | Guide, method, or command that tells a researcher what to do. |
| Scale | Set of symbols or numbers so constructed that the symbols or numbers can be assigned by a rule to the individuals to whom the scale is applied. |
| Nominal scales | Scales that partition data into mutually exclusive and collectively exhaustive categories. |
| Ordinal scales | Scales that maintain the labeling characteristics of nominal scales and have the ability to order data. |
| Interval scales | Scales that have the characteristics of ordinal scales, plus equal intervals between points to show relative amounts; they may include an arbitrary zero point. |
| Ratio scales | Scales that have the characteristics of interval scales, plus a meaningful zero point so that the magnitudes can be compared arithmetically. |
| Reliability | Degree to which measures are free from random error and therefore provide consistent data. |
| Test-retest reliability | Ability of the same instrument to produce consistent results when used a second time under conditions as similar as possible to the original conditions. |
| Stability | Lack of change in results from test to retest. |
| Equivalent form reliability | Ability of two very similar forms of an instrument to produce closely correlated results. |
| Internal consistency reliablity | Ability of an instrument to produce similar results when used on different samples during the same time period to measure a phenomenon. |
| Split-half technique | Method of assessing the reliability of a scale by dividing the total set of measurement items in half and correlation the results. |
| Validity | Degree to which what the researchers was trying to measure was actually measured. |
| Face validity | Degree to which a measurement seems to measure what it is supposed to measure. |
| Content validity | Representativeness of the content of the measurement instrument. |
| Criterion-related validity | Degree to which a measurement instrument can predict a variable that is designated a criterion. |
| Predictive validity | Degree to which a future level of a criterion variable can be forecast by a current measurement scale. |
| Concurrent validity | Degree to which another variable, measure at the same point in time as the variable of interest, can be predicted by the measurement instrument. |
| Construct validity | Degree to which a measurement instrument represents and logically connects, via the underlying theory, the observed phenomenon to the construct. |
| Convergent validity | Degree of correlation among different measurement instruments that purport to measure the same construct |
| Discriminant validity | Measure of the lack of association among constructs that are supposed to be different. |
| Scaling | Procedures for assigning numbers to properties of an object in order to impart some numerical characteristics to the properties in a question. |
| Unidimensional scales | Scales designed to measure only one attribute of a concept, respondent, or object. |
| Multidimensional scales | Scales designed to measure several dimensions of a concept, respondent, or object. |
| Graphic rating scales | Measurement scales that include a graphic continuum, anchored by two extremes. |
| Itemized rating scales | Measurement scales in which the respondent selects an answer from a limited number of ordered categories. |
| Noncomparative scales | Measurement scales in which judgment is made without reference to another object, concept, or person. |
| Q-sorting | A measurement scale employing a sophisticated form of rank ordering using card sorts. |
| Paired comparison scales | Measurement scales that ask the respondent to pick one of two objects in a set, based on some stated criteria. |
| Constant sum scales | Measurement scales that ask the respondent to divide a given number of points among two or more attributes, based on their importance. |
| Semantic differential scales | Measurement scales that examine the strengths and weaknesses of a concept by having the respondent rank it between dichotomous pairs of words or phrases that could be used to describe it; the means of the responses are then plotted as a profile, or image. |
| Stapel scales | Measurement scales that require the respondent to rate how closely and in what direction a descriptor adjective fits a given concept. |
| Likert scales | Measurement scales in which the respondent specifies a level of agreement or disagreement with statements expressing either a favorable or unfavorable attitude toward the concept under study. |
| purchase intent scales | Scales used to measure a respondent's intention to buy or not buy a product. |
| Net Promoter Score | Begins with a 10 point scale on likelihood to recommend. Then, the differences between promoters and dissuaders is computed. |
| Balanced scales | Measurements scales that have the same number of positive and negative categories. |
| Nonbalanced scales | Measurement scales that are weighted toward one end or the other. |
| Determinant attitudes | Those consumer attitudes most closely related to preferences or to actual purchase decisions. |
| Questionnaire | Set of questions designed to generate the data necessary to accomplish the objectives of the research project; also called an interview schedule or survey instrument. |
| Editing | Going through each questionnaire to ensure that skip patterns were followed and the required questions were filled out. |
| Skip pattern | Sequence in which questions are asked, based on a respondent's answer. |
| Coding | Process of grouping and assigning numeric codes to the various responses to a question |
| Survey Objectives | Outline of the decision-making information sought through the questionnaire |
| Open-ended questions | Questions to which the respondent replies in her or his own words |
| Closed-ended questions | Questions that require the respondent to choose from a list of answers |
| Dichotomous questions | Closed-ended questions that ask the respondent to choose between two answers. |
| Multiple-choice questions | Closed-ended questions that ask the respondent to choose among several answers |
| Scaled-response questisons | Closed-ended questions in which the response choices are designed to capture the intensity of the respondent's feeling. |
| Clarity in wording | Avoid ambiguous terminology, use reasonable, vernacular language adjusted to the target group, as only one question at a time. |
| Respondent biasing | Leading questions that give away the research goal or sponsor identity. |
| Screeners | Questions used to identify appropriate respondents |
| Prompters | Short encouraging statements to rebuild respondent interest |
| Necessary questions | Pertain directly to the stated survey objectives or are screeners, interest generators, or required transitions. |
| Approval by managers | Managerial review and approval after questionnaire drafting to prevent false starts and expensive redrafts. |
| Pretest | Trial run of questionnaire |
| Supervisor's instructions | Written directions to the field service firm on how to conduct the survey. |
| Field management companies | Firms that provide such support services as questionnaire formatting, screener writing, and coordination of data collection. |
| Questionnaire costs and profitablity | Factors affecting costs and profits include overestimating, overbidding, incidence rate, roadblocks to completed interviews, and premature interview terminations. |
| Sampling | Process of obtaining information from a subset of a larger group |
| Population | Entire group of people about whom information is needed |
| Census | Collection of data obtained from every member of the population of interest |
| Sample | Subset of all members of a population of interest |
| Sampling frame | List of population elements from which units to be sampled can be selected or a specified procedure for generating such a list |
| Random-digit dialing | Method of generating lists of telephone numbers at random |
| Probability samples | Samples in which every element of the population has a known, nonzero likelihood of selection |
| Nonprobability samples | Samples in which specific elements from the population have been selected in nonrandom manner |
| Sample size | The Identified and selected population subset for the survey, chosen because it represents the entire group |
| Population parameter | A value that accurately portrays or typifies a factor of a complete population, such as average age or income |
| Sampling error | Error that occurs because the sample selected is not perfectly representative of the population |
| Nonsampling error | All error other than sampling error; measurement error |
| Simple random sample | Probability sample selected by assigning a number to every element of the population and then using a table of random numbers to select specific elements for inclusion in the sample. |
| Systematic sampling | Probability sample in which the entire population is numbered and elements are selected using a skip interval |
| Stratified sample | Probability sample that is forced to be more representative through simple random sampling of mutually exclusive and exhaustive subsets |
| Proportional allocation | Sampling in which the number of elements selected from a stratum is directly proportional to the size of the stratum relative to the size of the population. |
| Disproportional allocation | Sampling in which the number of elements taken from a given stratum is proportional to the relative size of the stratum and the standard deviation of the characteristic under consideration. |
| Cluster sample | Probability sample in which the sampling units are selected from a number of small geographic areas to reduce data collection costs |
| Multistage area sampling | Geographic areas selected for national or regional surveys in progressively smaller population units, such as counties, then blocks, then homes. |
| Convenience samples | Nonprob. samples based on using people who are easily accessible |
| Judgment samples | Nonprob. samples in which the selection criteria are based on the researcher's personal judgment about representativeness of the population under study. |
| Quota samples | Nonprob. samples in which quotas based on demographic factors selected by the researcher, are established for population subgroups. |
| Snowball samples | Nonprob. samples in which additional respondents are selected based on referrals from initial respondents. |