I have a question regarding the evaluation of my experiment. My study design looks like the following:

Each participant is shown 4 texts, 2 linguistic uncertain and 2 linguistic certain, at the same time. In addition, they are asked how "uncertain" they perceive each of the texts. On the following pages, we asked several questions regarding their socio-demographics, personality traits, and risk tolerance.

The DV is the perceived uncertainty of each text (measured on a 5-point Likert scale). The IVs are the text version (linguistic certain/linguistic uncertain), socio-demographics, risk tolerance, and personality traits.

Examples of my hypotheses are the following:

1. Age is positively associated with uncertainty perception.
2. Linguistic uncertainty predicts a higher uncertainty perception.

My problem is: In my resulting data set, I have 4 rows for each participant. Is that a problem for linear regression? Moreover, how do I test my hypotheses? I thought about a hierarchical linear regression to control for other variables when I test for my main hypothesis (2.)

Example of my data:

I have a question regarding the evaluation of my experiment. My study design looks like the following:

Each participant is shown 4 texts, 2 linguistic uncertain and 2 linguistic certain, at the same time. In addition, they are asked how "uncertain" they perceive each of the texts. On the following pages, we asked several questions regarding their socio-demographics, personality traits, and risk tolerance.

The DV is the perceived uncertainty of each text (measured on a 5-point Likert scale). The IVs are the text version (linguistic certain/linguistic uncertain), socio-demographics, risk tolerance, and personality traits.

Examples of my hypotheses are the following:

1. Age is positively associated with uncertainty perception.
2. Linguistic uncertainty predicts a higher uncertainty perception.

My problem is: In my resulting data set, I have 4 rows for each participant. Is that a problem for linear regression? Moreover, how do I test my hypotheses? I thought about a hierarchical linear regression to control for other variables when I test for my main hypothesis (2.)

Example of my data:

EDIT: Another DV is the investment sum, the participant would invest in the different companies belonging to the different texts. The possible investment sum ranges from 0 to 10000. Thus, classification is not possible as one DV is continuous. Hypotheses for that DV looks like the following: Linguistic uncertainty predicts a lower investment sum.