Othello and questions the men as to what happened. Othello blames Cassio for the disturbance and strips him of his rank. Cassio is distraught. Iago persuades Cassio to ask Desdemona to convince her husband to reinstate Cassio. Iago now persuades Othello to be suspicious of Cassio and Desdemona. When Desdemona drops a handkerchief (the first gift given to her by Othello), Emilia finds it, and gives it to her husband Iago, at his request, unaware of what he plans to do with it. Othello reenters and vows with Iago for the death of Desdemona and Cassio, after which he makes Iago
Othello error Othello error Othello error occurs when a suspicious observer discounts cues of truthfulness. Essentially the Othello error occurs, Paul Ekman states, "when the lie catcher fails to consider that a truthful person who is under stress may appear to be lying" their non-verbal signals expressing their worry at the possibility of being disbelieved. A lie-detector or polygraph may be deceived in the same way, by misinterpreting nervous signals from a truthful person. The error is named after William Shakespeare's tragic play "Othello"; the dynamics between the two main characters, Othello and Desdemona, are a particularly well-known example of the error