According to the textbook, variables change along with the independent variable, making it difficult to pinpoint actual causes. these variables are thus roughly similar to in correlational research.

I believe the answer is: Confounding; Third factors

conclusion that is created by researchers usually based on the relationship between independent and dependent variables. But, confounding and third factors variables both influencing the independent and dependent variables at the same time, which often clouded the true relation between the independent and dependent variables.

glass wants to live in a world of super heroes and villains. he have lived all his life trying to be responsible for the creating the origin story of a super hero; he schemed and caused many incidents (many of them fatal) hoping that someday someone with superpowers would show up and save the day.

he knew himself very much. he saw himself as a villain of a real-life super hero story. he was aware of his strengths (more than smart enough for being manipulative and scheming) and weaknesses (having fragile bones and having to rely on his mind to succeed).