We must use language correctly in argumentation because it allows us to make strong and logical arguments. This way, we can share our arguments with readers without confusing them. However, it is common for us to make mistakes in writing, such as vague and unclear terms, causing our ideas to be misunderstood or missing the main point of the argument. We make a vague argument when we do not use specific information, instead using general data, causing it to lack logic. On the other hand, emotive language conveys sensations or feelings ranging from anger to sadness. This language causes the reader to feel compelled to agree with the argument, regardless of whether it is a logical argument or is merely pressure. In addition, a reason why an argument loses its validity is because of fallacies. For instance, ad hominem means that when someone does not respond with a logical argument about a statement, they use arguments to make the person feel ridiculous. In the same way, slippery slope means predicting a consequence without having clear evidence that it will happen. Finally, hasty generalization and appeal to ignorance make conclusions without evidence, or think that one thing is true because no one has proven otherwise. 
Example to analyze:
Students who play sports can concentrate better in class because physically activities improves brain focus. 
Premise:  Students who play sports can concentrate better in class
Conclusion: Playing sports enhance academic performance
Playing sports helps students focus better in class. However, saying that sports directly improve academic performance is a general statement. While concentration is important, more specific evidence is needed to fully support this conclusion.