List what the a) independent and b) dependent variables are and the c) experimental and d) control group are in the following two experimental studies. A researcher wanted to test if hypnotism could reduce or stop smoking habits. One group of participants went under a hypnotic process and the other group was spoken to, but not hypnotized.
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List what the a) independent and b) dependent variables are and the c) experimental and d) control group are in the following two experimental studies.
- A researcher wanted to test if hypnotism could reduce or stop smoking habits. One group of participants went under a hypnotic process and the other group was spoken to, but not hypnotized.
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- Professor Wonka is interested in whether candy influences children's mood. One group of children is recruited to be part of an experimental group, and another group of children is recruited to be part of the control group. Participants in the experimental group each eat 1 candy bar and then report on their mood on a self-report questionnaire. Children in the control condition do not eat anything before reporting on their mood. Here are the data from the two groups: Experimental (candy) group 15 18.3 94.6 n= M= SS= Control group 17 14.5 112.8 Calculate the effect size in terms of the n= M= SS= proportion of variance accounted for (r-).In a research study, wherein the researcher wanted to know if people’s intelligence is perceived differently based on race, participants observed either a Caucasian, African American, or Asian American stimulus person giving a speech. All stimulus persons gave the same verbal speech. After observing this person, the participants had to rate the stimulus person’s level of intelligence on a scale of 1-10. The participants were separated by gender and their ratings were analyzed separately. How many possible interaction effects might the researcher find? Group of answer choices 3 0 1 2Do people feel hungrier after sampling a healthy food? The authors of a consumer research paper carried out a study to answer this question. They randomly assigned volunteers into one of three groups. The people in the first group were asked to taste a snack that was described as a new health bar containing high levels of protein, vitamins, and fiber. The people in the second group were asked to taste the same snack but were told it was a tasty chocolate bar with a raspberry center. After tasting the snack, participants were asked to rate their hunger level on a scale from 1 (not at all hungry) to 7 (very hungry). The people in the third group were asked to rate their hunger but were not given a snack. The data in the table are consistent with summary quantities given in the paper (although the sample sizes in the actual study were larger). Treatment Group Healthy Tasty 5 8 7 Hunger Rating No Snack 3 4 4 4 1 4 2 7 3 6 2 5 6 5 5 4 7 5 2 3 4 6 4 4 Sample Mean 5.6667 3.4444 4.2222 Sample…
- Below is data from a study examining the effects of two different psychotherapy treatments on self-esteem. Specifically, two different treatment types (treat1 and treat2) were compared to a waiting list control group in terms of increasing self-esteem; the main question concerned whether each separate therapy type was different from no treatment at all. The values shown below are the self-esteem scores for the participants in each group (higher values indicate greater self-esteem). a. What inferential test did you use? b. Using an alpha level of .05, determine whether there were any mean differences between the groups of interest?In a study of the effects of type of study on exam performance, participants are randomly assigned performance, participants are randomly assigned to one of two conditions. in one condition, participants study alone using notes from class lectures. The amount of time spent studying is held constant. All students then take the same exam on the material. a. What is the independent variable in this study? b. What is the dependent variable in this study? c. Identify the independent variable manipulated or participant variable? d. Is the independent variable manipulated or a participant variable?Do people feel hungrier after sampling a healthy food? The authors of a consumer research paper carried out a study to answer this question. They randomly assigned volunteers into one of three groups. The people in the first group were asked to taste a snack that was described as a new health bar containing high levels of protein, vitamins, and fiber. The people in the second group were asked to taste the same snack but were told it was a tasty chocolate bar with a raspberry center. After tasting the snack, participants were asked to rate their hunger level on a scale from 1 (not at all hungry) to 7 (very hungry). The people in the third group were asked to rate their hunger but were not given a snack. The data in the table are consistent with summary quantities given in the paper (although the sample sizes in the actual study were larger). TreatmentGroup Hunger Rating SampleMean SampleStandardDeviation Healthy 5 8 7 4 7 3 4 7 6 5.6667 1.7321 Tasty 4 1 5 2 6 2 5 3 4 3.5556…
- Do people feel hungrier after sampling a healthy food? The authors of a consumer research paper carried out a study to answer this question. They randomly assigned volunteers into one of three groups. The people in the first group were asked to taste a snack that was billed as a new health bar containing high levels of protein, vitamins, and fiber. The people in the second group were asked to taste the same snack but were told it was a tasty chocolate bar with a raspberry center. After tasting the snack, participants were asked to rate their hunger level on a scale from 1 (not at all hungry) to 7 (very hungry). The people in the third group were asked to rate their hunger but were not given a snack. The data in the table are consistent with summary quantities given in the paper (although the sample sizes in the actual study were larger). Find the test statistic and P-value. (Use technology. Round your test statistic to two decimal places and your P-value to three decimal places.)…]14. Many animals, including humans, tend to avoid direct eye contact and even patterns that look like eyes. Some insects, including moths, have evolved eye-spot patterns on their wings to help ward off predators. Scaife (1976) reports a study examining how eye-spot patterns affect the behaviour of birds. In the study, the birds were tested in a box with two chambers and were free to move from one chamber to another. In one chamber, two large eye-spots were painted on one wall. The other chamber had plain walls. The researcher recorded the amount of time each bird spent in the plain chamber during a 60-minute session. Suppose the study produced a mean of M 34.5 minutes on the plain chamber with SS = 210 for a sample of n = 15 birds. (Now: If the eye spots have no effect. then the birds should spend an average of u = 30 minutes in each chamber.) a. Is this sample sufficient to conclude that the eyes pots have a significant influence on the bird's behaviour? Ike a two-tailed test with…A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial expression and/ or gender. Some photos were of males; others were of females, and within each of those groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the same photo set. This means each participant judged every condition – male smiling; male neutral; female smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant: Smiling pictures Neutral pictures Male photos Female photos Male photos Female photos Participant A 8.7 8.2 8.5 9.0 Participant B 9.1 8.0 9.0 8.5 Participant C 8.3 9.0 8.3 8.4 Participant D 9.5 8.8 9.4 9.2 Participant E 9.0 8.2 8.9 8.8 Participant F 7.7 7.0 7.8 7.5 Participant G 8.6 8.8 8.5 8.0 Participant H 8.5 7.3 8.4 7.7 Participant I…
- Dr. Peart randomly assigns some children to two separate groups. One group of children watches a video of an adult "beating" a doll. The other group watches a video of the same adult playing with the doll. After the video, each child is given a doll and the researchers observed what they did with the doll. In this case, the independent variable is: i. What is the independent variable and dependent variable in this study? Name the conditions in the independent variable. ii. If Dr. Peart wants to have 10 children in each condition, what is the total number of kids that she needs?A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial expression and/ or gender. Some photos were of males; others were of females, and within each of those groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the same photo set. This means each participant judged every condition – male smiling; male neutral; female smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant: Smiling pictures Neutral pictures Male photos Female photos Male photos Female photos Participant A 8.7 8.2 8.5 9.0 Participant B 9.1 8.0 9.0 8.5 Participant C 8.3 9.0 8.3 8.4 Participant D 9.5 8.8 9.4 9.2 Participant E 9.0 8.2 8.9 8.8 Participant F 7.7 7.0 7.8 7.5 Participant G 8.6 8.8 8.5 8.0 Participant H 8.5 7.3 8.4 7.7 Participant I…A researcher wanted to investigate whether perception of intelligence is influenced by a person’s facial expression and/ or gender. Some photos were of males; others were of females, and within each of those groups, some were smiling whereas others had neutral facial expressions. All 12 participants were shown the same photo set. This means each participant judged every condition – male smiling; male neutral; female smiling; female neutral. Data are the average perceived intelligence scores for each condition per participant: How do I input this information on SPSS and what type of anova would I run? Smiling pictures Neutral pictures Male photos Female photos Male photos Female photos Participant A 8.7 8.2 8.5 9.0 Participant B 9.1 8.0 9.0 8.5 Participant C 8.3 9.0 8.3 8.4 Participant D 9.5 8.8 9.4 9.2 Participant E 9.0 8.2 8.9 8.8 Participant F 7.7 7.0 7.8 7.5 Participant G 8.6…