In the context of an IT research study, when recruiting human participants for a study, you must ALWAYS do the following:

Question

BlackTom AI · Accepted Answer

Informed consent requires participants be told in advance what data will be collected, how it will be used, stored, and any associated risks — this is the central ethical and legal requirement for human-subjects research.

1. Relevant knowledge points and concepts
- Informed consent / transparency: Participants must receive clear information about the study purpose, procedures, and data collection before they agree. This is a core requirement of research ethics (Common Rule, GDPR transparency principles).
- Privacy and data minimization: Researchers must disclose what personal data are collected and why.
- Compensation, experimental control, recruitment methods, and training are study-design choices that can vary; they are not universal obligations.

2. Step-by-step reasoning process
Step 1: Identify universal obligations in human-subjects research — informed consent and disclosure of data collection are always required.
Step 2: Examine each answer option against that requirement.
Step 3: Determine which options describe requirements that are conditional (dependent on study goals, local policy, or ethics review) rather than absolute.

3. Intermediate logical steps (no numeric calculations required)
- Option b states pre-study disclosure of collected data → matches informed consent and legal transparency obligations → always required.
- Option a (pay participants at local average hourly rate) → compensation is common but not universally required and must avoid undue inducement; amount is not mandated as “local average hourly rate.”
- Option c (all participants have exact same experience) → contradicted by many valid study designs (e.g., A/B tests, within-subject vs between-subject comparisons); equality of experience is not always desired.
- Option d (use just one recruitment technique) → poor practice for representativeness; not required and often undesirable.
- Option e (provide extensive training) → sometimes necessary, often unnecessary, and may bias results; not a blanket requirement.

4. Why the correct answer is correct
Disclosing what data will be collected before participation is a foundational element of informed consent and data protection law: participants must know what information will be gathered so they can make an informed decision to participate. This is mandatory irrespective of study design or compensation.

5. Why other options are incorrect (brief)
- a: Compensation is optional and must be appropriate, not universally required at a specific rate.
- c: Uniform experience is not required and often incompatible with experimental manipulation.
- d: Limiting to a single recruitment method is unnecessary and can introduce bias.
- e: Extensive training is situational and can invalidate some study types; not always required.

6. Conclusion / final confirmation
Therefore the only always-required action is to let participants know before the study what data you will collect from them. This confirms the correct answer: b.

In the context of an IT research study, when recruiting human participants for a study, you must ALWAYS do the following:多项选择题

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