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Sample
A sample is a smaller subset of individuals selected from a larger population of interest. Because it is usually impossible to study every member of a population, researchers measure variables within a sample with the intention of generalizing their findings back to the broader group, ideally using a representative sample that closely resembles the population.
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Population
Cons of Using Surveys
Advantages of Survey Research
Example of an Online Survey Invitation
Comparison of Surveys and Case Studies
Ruth W. Howard's Triplet Survey
Advantage of Surveys: Efficient Data Collection
Weakness of Survey Research: Reliance on Honest Self-Reporting
Weakness of Survey Research: Shallow Data
A team of public health researchers wants to quickly gather data on the dietary habits and attitudes towards nutrition from a large, geographically diverse sample of 5,000 adults. Which of the following data collection strategies would be the most practical and effective for achieving this specific research goal?
Advantage of Survey Research: Generalizability
Example of Survey Research: Uncovering Subtle Prejudice
Sample
Respondent
Applications of Surveys
Characteristics of Survey Research
Origins of Survey Research
Example of Survey Research: Emotion and Risk Perception
Survey Construction Challenges
Survey Administration Mode
Which of the following best defines a survey as used in psychological research?
Dr. Smith is collecting data on consumer preferences by conducting telephone interviews, while Dr. Jones is gathering data on health habits using an online questionnaire. Even though they are using different administrative formats, both researchers are successfully employing the survey method.
What type of measure is a survey primarily considered to be?
Because they gather meaningful answers about complex topics like social attitudes and consumer preferences, surveys must be conducted through in-person interviews.
A psychologist must choose the most effective format to administer a survey based on the specific goals and constraints of their research study. Match each research scenario with the administration format that best fits the described goal.
A researcher is deconstructing the structural components of a survey to understand its research design. Arrange the following elements in the logical order of their implementation, moving from the broad conceptualization of the research to the specific procedural delivery to participants.
A researcher is constructing a new survey to evaluate the health behaviors of a population that is largely homebound and has limited access to digital technology. Which integrated design should the researcher create to ensure they gather meaningful self-report data while effectively utilizing the versatility of survey formats?
To be classified as a survey, a self-report measure must be administered as a written questionnaire, because spoken interactions like in-person or telephone interviews are classified as entirely separate research methods.
A _____ is a versatile data collection tool used to gather meaningful answers about topics such as voting intentions, consumer preferences, social attitudes, or health, and can be administered through multiple formats including in-person interviews or online questionnaires.
When evaluating the validity of a research study on consumer preferences, a psychologist must recognize that the data are _____ measures, which means the results are entirely dependent on the accuracy of the participants' own descriptions of their internal states.
Species & Route of Exposure (Table 1)
Sample
In the context of psychological research, how is a 'population' defined?
A developmental psychologist is studying the language acquisition skills of children with autism. She observes 50 children with autism at a local clinic. In this research context, what term best describes the entire group of 'all children with autism' that the psychologist ultimately wants to draw conclusions about?
True or False: In psychological research, a population must always consist of a broad group, such as all human beings, in order to allow researchers to draw valid conclusions.
In psychological research, the 'population' is defined by the specific group a researcher intends to draw conclusions about. Match each study description to the correct population that represents the researcher's overall group of interest.
A researcher is planning a study on the impact of social media on self-esteem. Evaluate the logical sequence for defining their 'population' by arranging the following steps in order, from the initial conceptual interest to the finalized group for conclusion-drawing.
In psychological research, what does the term 'population' refer to?
In psychological research, which of the following best describes how a researcher's goals influence the definition of a population?
In research, the entire group of individuals that a researcher is interested in studying and drawing conclusions about is called the _____.
True or False: If a researcher changes their study's objective from understanding the behavior of all human beings to understanding the behavior of professional athletes, they have redefined the population of interest, because the scope of a population is determined by the specific goals of the researcher.
Evaluate the goals of each research study scenario and match it to the most logically justified population of interest.
Learn After
Relationship Between Sample and Population
A team of researchers wants to understand the typical sleep habits of all adults in a country of 50 million people. Since they cannot survey every individual, which of the following approaches would be the most practical and scientifically sound first step for their investigation?
Random Sample
Example of a Sample: Talkativeness Study
Representative Sample
Inferential Statistics
Probability Sampling
Non-probability Sampling
Determinants of Survey Sample Size
Convenience Sampling
Survey Non-responder
Simple Random Sampling
Sampling Bias
Measures of Central Tendency
Which of the following best explains why a psychology researcher would choose to study a sample rather than an entire population?
A researcher is investigating the exercise habits of all 5,000 employees at a corporate headquarters. Arrange the steps of the research process in the correct logical order to show how a sample is used to understand the entire group.
A psychologist investigates the study habits of all first-year college students by surveying 200 first-year students at a single university. Match each part of this study to its functional role in the sampling process.
A researcher concludes that a sample of 1,000 volunteers recruited from a specialized tech-support website is a methodologically sound group for evaluating the computer literacy of all adults in a nation. This conclusion is justified because a sample size this large () automatically guarantees that the subset will closely resemble the entire group of interest.
Imagine you are a researcher designing a study to assess the prevalence of academic burnout among the students in a statewide public university system. To construct a sampling plan that yields a highly representative subset () while ensuring that students from 'commuter', 'residential', and 'online-only' campuses are proportionally represented, which of the following sampling architectures should you create?
In psychological research, the primary goal of measuring variables in a sample is to generalize the findings back to the broader population of interest.
To conduct a study, researchers typically select a smaller subset of individuals from a broader group of interest. This smaller subset is referred to as a _____.
A psychology researcher wants to study the relationship between screen time and sleep quality among undergraduate students at a large university. Match each component of their study design to its corresponding concept in the sampling process.
A researcher measures academic anxiety in a group of 100 college students, intending to apply these results to all college students nationwide. In research methodology, the ultimate scientific goal of measuring these variables within a sample is to _____ the findings back to the broader population.
A researcher is planning a study on student stress. Evaluate and arrange the steps of the sampling and measurement process in the correct logical order, starting with the broadest scope and ending with the final application of the research findings.