Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
HCI2-F5
| Question | Answer |
|---|---|
| Which design uses both pretest and posttest but without random assignment? | Quasi-experimental |
| Which design compares groups that are likely different before the study begins? | Nonequivalent before-after |
| The group that receives the treatment in an experiment is called: | Experimental group |
| Which of the following is a type of true experimental design? | Solomon four-group? |
| A null hypothesis typically states that: | There is no significant difference |
| Which design compares two groups, one treated and one untreated, after treatment? | Static-group comparison |
| Fitts’ Law in HCI relates to: | Pointer movement time |
| Which of the following is a threat to internal validity? | Control group demoralization |
| Which of the following is NOT a component of an experiment? | Hypothesis |
| In a school, one class receives a new math curriculum. Another class does not. The researcher compares posttest scores. What design is this? | Static-group comparison |
| A control group works harder to outperform the experimental group. What threat is this? | John Henry effect |
| A researcher uses a random digit table to assign participants to groups. What is the purpose of this? | Control hidden variables |
| In a study, students in one school receive a new curriculum, while another school continues with the old one. No random assignment is done. What design is this? | Quasi-experimental |
| A researcher wants to test a new keyboard layout. Participants are randomly assigned and only posttest data is collected What design is used? | Posttest equivalent |
| A researcher wants to test if a new mobile app improves user productivity. They assign users randomly to either use the app or not. What type of design is this? | True experimental |
| A researcher compares two groups that are known to differ before the experiment. What design is this? | Nonequivalent before-after |
| A researcher observes that students in the control group are copying techniques from the experimental group. What threat is this? | Treatment diffusion |
| A teacher implements a new teaching strategy and measures student performance weekly for 2 months. What design is this? | Time-series |
| A study finds that students improved in math scores, but the improvement may be due to natural development over time. What threat is this? | Maturation |
| 19/20 | |
| Which threat involves the control group unintentionally receiving the treatment? | Treatment diffusion |
| Randomization in experiments helps to: | Control hidden factors |
| Which design is considered the most accurate in experimental research? | True experimental |
| What is the primary goal of experimental research in HCI? | To identify causal relationships |
| A null hypothesis typically states that: Group of answer choices | There is no significant difference |
| Loss of subjects during an experiment affects: | Internal validity |
| Which design compares groups that are likely different before the study begins? | Nonequivalent before-after |
| Which of the following is a threat to internal validity? | Control group demoralization |
| Which design includes only a posttest after treatment? | One-shot case study |
| A researcher tests a new training program on one group and compares pretest and posttest scores. What design is this? | One-group pretest-posttest |
| A researcher uses a random digit table to assign participants to groups. What is the purpose of this? | Control hidden variables |
| Children naturally improve in reading over time, regardless of treatment. What threat is this? | Maturation |
| A researcher notices that the control group starts using techniques from the treatment group. What threat is present? | Treatment diffusion |
| A teacher compares two classes: one uses a new reading strategy, the other does not. No random assignment is done. What design is this? | Quasi-experimental |
| A study finds that students improved in math scores, but the improvement may be due to natural development over time. What threat is this? | Maturation |
| In a study, students are taught using a new method Their performance is measured only after the teaching. What design is used? | One-shot case study |
| 20/20 | |
| The Hawthorne Effect refers to: | Subjects responding differently because they are being studied |
| Which design compares two groups, one treated and one untreated, after treatment? | Static-group comparison |
| Which design involves repeated testing over time? | Time-series design |
| What is the primary goal of experimental research in HCI? | To identify causal relationships |
| Significance tests are used to: | Compare observed data with hypotheses |
| Which design uses both pretest and posttest but without random assignment? | Quasi-experimental |
| In HCI, experimental units are typically: | Human subjects |
| A researcher compares two groups after treatment but did not check if they were similar before the study. What is a potential issue here? | Lack of pretest |
| A teacher implements a new teaching strategy and measures student performance weekly for 2 months. What design is this? | Time-series |
| In a study, students in one school receive a new curriculum, while another school continues with the old one. No random assignment is done. What design is this? | Quasi-experimental |
| A study is conducted to test a new diet plan. Participants are not randomly assigned, but both groups are tested before and after. What design is this? | Nonequivalent pretest-posttest |
| In a study, the control group performs poorly because they feel left out of the treatment. What threat is this? | Control group demoralization |
| A study measures typing speed using QWERTY and DVORAK keyboards. Participants have no prior experience. What is being controlled? | Subject characteristics |
| A study on a new medication uses random assignment and measures outcomes only after treatment. What design is this? | Posttest equivalent |
| A researcher uses four groups to test the effect of pretesting and treatment. What design is this? | Solomon four-group |
| A researcher wants to test a new e-learning platform. They assign students randomly and use both pretest and posttest. What is the best design to use? | Pretest-posttest equivalent |
| 20/20 | |
| A researcher wants to test a new app feature. They randomly assign users and use both pretest and posttest. What design is this? | Pretest-posttest equivalent |
| A study tracks user engagement weekly for 3 months before and after a UI change. What design is this? | Time-series |
| A study compares reading speed on mobile vs desktop. The hypothesis states no difference. What type of hypothesis is this? | Null hypothesis |
| A researcher wants to test if a new mobile app improves user productivity. They assign users randomly to either use the app or not. What type of design is this? | True experimental |
| In a study, participants improve performance simply because they know they are being observed What effect is this? | Hawthorne effect |
| A control group works harder to outperform the experimental group. What threat is this? | John Henry effect |
| 20/20 | |
| A control group feels discouraged because they didn’t receive the new teaching method. What threat is this? | Control group demoralization |
| A company tests two interface designs by randomly assigning users and measuring satisfaction before and after use. What design is this? | Pretest-posttest equivalent |
| A group of students drops out of a study before the posttest. What threat to validity is this? | Loss of subjects |
Created by:
f3xo