A researcher is interested in the impact of anxiety on performance. In order to manipulate anxiety, they have some subjects eat plain chips while others eat barbecue flavoured chips. The most obvious problem with this experiment is a lack of :a. statistical validityb. empirical validityc. internal validityd. construct validity

When the results of an experiment can confidently be attributed to the effect of the independent variable, the experiment is said to have A. been controlled B. internal validity C. achieved its aim D. external validity

The methods that are used to select participants for conducting a research experiment are likely to have a profound impact on the Blank______ of the study.Multiple choice question.external validityconstruct validitymatching variabilityconfounding variability

Researchers looked at the effect of a new medication on the behaviour of horses with anxiety. Horses were randomly assigned to received either the medication or an inactive substance, and their behaviour was observed. The researchers collecting and analysing the data dit not know whether the horses had received the medication or the inactive substance. Use the information about the study to decide if each of the following three statements are TRUE or FALSE. Statement 1 A placebo was not used in this study. Statement 2 Blinding was not used in this study. Statement 3 A control group was not used in this study.

In an experimental research design, internal validity is primarily referred to as: Group of answer choicesThe extent to which the results are attributed to the manipulated independent variableThe best basis for determining one variable's influence on another variableThe ethical considerations in conducting experimentsThe findings can be generalised beyond experiment data to different populations

Designing the Psychological Test : Test Objective: To assess the level of anxiety in a hypothetical client. Test Format: A self-report questionnaire with Likert-scale items. Sample Items: • "I feel nervous and restless." • "I have trouble sleeping due to worrying." • "I find it difficult to concentrate because of my anxiety." Scoring: Each item is rated on a scale from 1 (Strongly Disagree) to 5 (Strongly Agree). Higher scores indicate higher levels of anxiety. (elaborate little bit more and write in in APA 7th style format )