Anchors: 1 = Strongly disagree, 7 = Strongly agree.

Stem: For me, to avoid using banned performance-enhancing substances/ methods in sport in the forthcoming month is something …

Intention

1. I intend to do
2. I will try to do
3. I plan to do

Subjective Norm

1. Most people who are important to me in sport think that I should do
2. Expected of me
3. The people in my life whose opinions I value would approve me to do
4. Many people like me to do

Perceived Behavioral Control

1. Possible for me to do
2. I could do if I want to
3. Over which I have complete control
4. That is completely down to me to decide to do
5. Easy for me to do

Attiude

Stem: For me, to avoid using banned performance-enhancing substances/ methods in sport in the forthcoming month is …

Anchors:

1. 1 = Useless, 7 = Useful.
2. 1 = Foolish, 7 = Wise.
3. 1 = Undesirable, 7 = Desirable.
4. 1 = Negative, 7 = Positive.
5. 1 = Harmful, 7 = Beneficial.
6. 1 = Disadvantageous, 7 = Advantageous.

Dimension

Items

Anchors

Behavioral Belief

Belief-strength

Stem: Avoiding using banned performance-enhancing substances/ methods in the forthcoming month will…

1.     … Help fully utilise my own ability in sport

2.     ...  Allow me to compete fairly against other players

3.     … Protect me against the potential negative side effects of drugs on my health

4.     … Ease my worries about being caught doping

5.     … Prevent me from the punishments and lengthy ban for doping

6.     … Keep me away from drugs that might lead to addiction

7.     … Lead to poorer results/victories/wins in competitions

8.     … Give me disadvantages against other competitors

9.     … Weaken my physical ability to train/ recover in sport

1 = extremely unlikely,

7 = extremely likely

Outcome Evaluation

1.     Fully utilising my own ability in sport is …

2.     Competing fairly against other players is …

3.     Not having any potential negative side effects of drugs on my health is …

4.     Not having any worries about being caught for doping is …

5.     Not receiving any punishments and lengthy ban for doping is …

6.     Being away from drugs that might lead to addiction is …

7.     Poorer results/victories/wins in competitions are …

8.     Having disadvantages to other players in competitions is …

9.     Having poorer physical ability to train/ recover in sport is …

1 = bad,

7 = good

Normative Belief

Belief-strength

1.     My coach thinks that I should/ shouldn’t …

2.     My teammates think that I should/ shouldn’t …

3.     My close friends think that I should/ shouldn’t …

4.     My family think that I should/ shouldn’t …

5.     My supporters (e.g., fans, spectators) thinks that I should/ shouldn’t …

6.     The media think that I should/ shouldn’t …

7.     People in my community think that I should/ shouldn’t …

Suffix: …avoid using banned performance-enhancing substances/ methods in the forthcoming month

1 = I should not,

7 = I should

Motivation to comply

How much I want to do what this person thinks I should do?

1.     My coach

2.     My teammates

3.     My close friends

4.     My family

5.     My supporters (e.g., fans, spectators)

6.     The media

7.     People in my community

1 = not at all,

7 = very much

Control Belief

Belief-strength

1.     I expect that I will have limited power to “say no” to banned performance-enhancing substances/ methods in sport in the forthcoming month

2.     I expect that I have limited knowledge to ensure the supplements or medication I take do not contain banned performance-enhancing substances/ methods in sport in the forthcoming month

3.     I expect that there will be a lot of challenges to avoid being in the situations where I might unintentionally take banned performance-enhancing substances/ methods in sport in the forthcoming month

4.     I expect that I will have limited opportunities to seek information or advice on anti-doping in sport in the forthcoming month

5.     I expect the doping tests will reveal whether or not I have managed to avoid using banned performance-enhancing substances/ methods in sport in the forthcoming month

1 = strongly disagree,

7 = strongly agree

Belief-power

1.     My ability to “say no” to the banned performance-enhancing substances/ methods in sport would make it …

2.     My knowledge to ensure the supplements or medications I take do not contain banned performance-enhancing substances/ methods in sport would make it …

3.     The challenge of having to avoid situations where I might unintentionally take the banned performance-enhancing substances/ methods in sport would make it …

4.     Having opportunities to seek information or advices on anti-doping in sport would make it …

5.     Taking doping tests would make it …

Suffix: …for me to avoid using banned performance-enhancing substances/ methods in sport in the forthcoming month

1 = difficult,

7 = easy