#117125 | AsPredicted

'Watching gambling online: Study 2 Cravings'
(AsPredicted #117125)


Author(s)
This pre-registration is currently anonymous to enable blind peer-review.
It has 2 authors.
Pre-registered on
12/19/2022 03:57 PM (PT)

1) Have any data been collected for this study already?
No, no data have been collected for this study yet.

2) What's the main question being asked or hypothesis being tested in this study?
Problem gambling severity will be more strongly associated with reported cravings from watching gambling streams than using gambling streams to regulate cravings.

3) Describe the key dependent variable(s) specifying how they will be measured.
1) Problem gambling severity will be measured using the 9-item PGSI. Scoring: Likert scale from 0 (Never) to 4 (Almost Always). Higher severity problem gambling corresponds to higher scores.

2) Craving from watching streams will be measured using a 2-item scale. Scoring: Likert scale from 1 (strongly disagree) to 7 (strongly agree).

3) Using streams to decrease cravings will be measured using a 2-item scale. Scoring: Likert scale from 1 (strongly disagree) to 7 (strongly agree).

4) How many and which conditions will participants be assigned to?
No conditions. Predictors are described in Dependent Variable and Analyses sections.

5) Specify exactly which analyses you will conduct to examine the main question/hypothesis.
1) We will use Spearman's rank correlations to examine the relationship between reported cravings from watching gambling streams, using streams to regulate cravings, and problem gambling severity

2) We will compare the correlation coefficient (Spearman's ranked) between problem gambling severity and cravings from watching gambling streams with the coefficient between problem gambling severity and using streams to regulate cravings.

6) Describe exactly how outliers will be defined and handled, and your precise rule(s) for excluding observations.
No outliers will be excluded. Participants will be excluded based on the following:

- If they fail at least one of two attention checks: In two of our scales, we added: "Please select "Neither Agree Nor Disagree" as your answer to this question". Participants will be excluded if they do not select "Neither Agree Nor Disagree"

- If they completed the survey in under 6.2 minutes. Brysbaert (2019 J Mem Lang) establishes the average speed of silent reading of online surveys as M = 238 words per minute (SD 51). Taking a speed 3 standard deviations above the mean, 391 words per minute, as implausibly fast, and based upon our main survey consisting of 2422 words, we imposed a threshold of 6.2 minutes.

- If they have not watched gambling streams within the past year. We ask, "In the past 12 months, how often have you watched any gambling streams online (e.g., on Youtube or Twitch)?" If participants report "I have never done this" or "Not at all in the past 12 months, but I have done this before then" then they will be excluded. Note: We ask this in our pre-screen and present this a second time to make sure that our sample will consist of gambling stream viewers.

7) How many observations will be collected or what will determine sample size?
No need to justify decision, but be precise about exactly how the number will be determined.

300. The completion point will be determined by Prolific.

8) Anything else you would like to pre-register?
(e.g., secondary analyses, variables collected for exploratory purposes, unusual analyses planned?)

Nothing else to pre-register.

Version of AsPredicted Questions: 2.00