Do the test persons have problems understanding and/or answering the question?
Four test persons had problems understanding the question or did not answer it correctly (TP 03, 04, 05, 09). Test persons 03 and 04 were not aware that this data was collected automatically without actively using the Health app:
- "I'm actually missing an answer there now. I own an iPhone, but I don't use Apple Health. But probably the iPhone uses that without me doing anything?” (TP 03)
- "I didn't, so I don't agree. [...] I don't use these services, but I couldn't check that anywhere. There was only the option ‘I do not own a smartphone from these manufacturers’.”
- "That is, you own a smartphone from these manufacturers, but you do not use these services, right?”
- "Exactly.”
Test persons 05 and 09 did not own an Apple or Samsung smartphone. However, instead of selecting the corresponding answer options, both clicked "No, I do not agree":
- "Well, I don't have Apple. I have a Huawai.” (TP 05)
- "Whether I agree or not, I don't have a smartphone from Apple and I don't have one from Samsung. But wait, I'm lying to you. The tablet I have in front of me is from Samsung, while the phone is from Huawai. O. K., I do not agree.” (TP 09)
How willing are test persons to share their Apple or Samsung Health data?
Two of the ten test persons stated that they did not own an Apple or Samsung smartphone (TP 06, 07), and two other test persons (TP 05, 09) answered the question with "No, I do not agree," although they do not own a smartphone from these manufacturers. Of the remaining test subjects, the majority (n = 5) were willing to share their Apple or Samsung Health data. The reasons given for this were that these data were not perceived as sensitive or that they generally trusted science or GESIS in particular:
- "For me, this data is not of great value. How often I move or how I move doesn't have much value to me. And that's why it would be okay for me to share this data.” (TP 01)
- "Because it is for a scientific purpose. I trust science.” (TP 02)
- "Because I know GESIS [laughs]. [...] That's what it says, or have I misunderstood? Doesn't that refer to GESIS? Well, I would only agree to it if I know the institution very well...” (TP 10)
Test person 04 justified her refusal with the fact that she does not use the Health app and does not want to disclose any more data than she already does: “One is because, as I said, I don't use it. But I couldn't check that off anywhere. And I find that they already know enough. They can always access the cell phones anyway, so to speak, and due to that you don't have to disclose it as well.”
What do the test persons understand by "Apple or Samsung Health data"?
With the exception of the two test persons who stated that they did not own an Apple or Samsung smartphone, all were asked to explain what they understood by the term "Apple or Samsung health data". Of these eight test persons, two indicated they did not know the term (TP 05, 09):
- "So, Apple I do not have. But no idea what this Health data is, no idea. In any case, it's data that goes along in the phone.” (TP 05)
- "Maybe you can help me a little bit. I'm going to assume the company, i.e. Samsung or Apple.” (TP 09)
The remaining six test persons were able to describe the Health app correctly:
- "So how often I move, with the smartphone, so all the pedometers or something like that. So in general, I would have associated movement data with it.” (TP 01)
- "Well, I have an iPhone and there is an app called Health. There you can enter certain data, such as height, weight, when you got your period, etc. I think you can also upload medical documents.” (TP 02)
- "The health data is that, I think. Fitness scores and stuff. The number of steps. I used that once, but I let it stay again.” (TP 08)
- "Yes, I use something like that. I have a watch like this that records my health data and it is stored in Health.” (TP 10)
