Transitional devices are words or phrases that link sentences and paragraphs together smoothly. They help carry thoughts from one idea to another and guide the reader through the progression of ideas in a paper. There are different types of transitional devices including additive, adversative, causal, and sequential transitions. Additive transitions show addition or similarity of ideas, adversative transitions indicate contrasting ideas, causal transitions connect actions and outcomes, and sequential transitions present ideas in chronological order. Proper use of transitional devices helps create a cohesive flow of ideas throughout a paper.