Stumped on Indicators of Sentiment

[Jason Miller]

Hello amazing group!

I am stumped on what is an indicator of sentiment in connection with my research question "What correlation, if any, is observed between indicators of sentiment and self-efficacy?"  I have SE scores already.

I have used: 

nltk.download('wordnet'), nltk.download('opinion_lexicon'), and nltk.download('vader_lexicon') and have exported the words and the scores - interesting when running Vader pre and post cleaning.  Yet not sure I am on the right track for indicators of sentiment.  Ideas?

Thank you