In the scene prior to Act III, Scene IV (Act III, Scene III), Othello condemns both Desdemona and Cassio, vowing that nothing at all will sway his thoughts towards his wife, and ordering Iago to kill Cassio. As we have previously witnessed, Othello’s character and mentality has completely changed, and for the first time in the entire play, in Act III Scene IV the audience sees an argument develop between Othello and Desdemona.
This is the point in the play where other people (i.e. Desdemona and Emilia) notice how Othello has changed his demeanour. Before, Othello’s turmoil was only shown in front of Iago, but here we have Othello, in public, quarrelling with his wife – and more importantly, completely losing his confidence and calm. Due to his constant demands for Desdemona to find the handkerchief, Othello works himself into a state of hysteria – losing his “regal” and “noble” bearing. This scene marks the first direct effect of Iago’s machinations on someone other than Othello (Desdemona).
An important point to note about Othello’s behaviour is his abruptness with his wife, which is not unlike Act III Scene III when Iago speaks to Emilia. Iago just makes demands of Emilia, like Othello’s demands to Desdemona to fetch the handkerchief. And then there is Othello’s references to Desdemona’s “moist” hand which could mean that she is being unfaithful. He implies that Desdemona is liberal in her affection, much like Iago commenting to Emilia that she is a “common thing”, i.e. also liberal with her affections.
This scene is also important because it highlights the foolishness and fickleness of men. Firstly this is done through Shakespeare’s use of the clown character, who makes a comment that men are only capable of doing menial things. Then Emilia highlights their fickle mindedness with her speech where she likens men’s affection for women to a satisfaction of someone’s appetite. On the surface, it is as if Emilia is speaking her true thoughts of Iago’s treatment of her, but on looking deeper one could see this as a reference to Othello’s sudden change of heart. As he now casts Desdemona aside, like a chicken bone after devouring all its meat. Thirdly through Bianca and Cassio’s exchange, where Bianca is resigned to accept her lot as a woman, accepting Cassio’s coarseness in his attitude, and his quick dismissal of her, as if there is no other possible outcome to being a woman.
It is interesting to compare this scene with the scene from Act I where the audience is first introduced to Othello – an Othello who can eloquently diffuse the violence about to erupt in a particular situation. In this scene however, we get the sense that Othello’s anger is just building and building, until finally when it seems as if he is about to explode with rage, he flees the scene instead of standing his ground. This exit of Othello’s is important, because it leaves Desdemona in such a state of shock and confusion that she does not go after him, but instead bids Iago to go to him, giving Iago leave to further manipulate Othello in a vulnerable state.
The final most important point in the scene is the very brief exchange between Cassio and Bianca, where he gives here Desdemona’s handkerchief that he has found. The audience does not know at this point how and why he has Desdemona’s handkerchief (though one can probably guess that Iago had something to do with it). Shakespeare has chosen to end the scene with a cliffhanger. We have already seen that Othello is a different person, and suffering inside, and Iago finally has position of lieutenant, so at this point there is no rational reason why his plans need to continue. We know that nothing good can come of Cassio giving the handkerchief to Bianca, and much like the end of Act III Scene III, the audience is again left feeling extremely tense, because we cannot foresee what Iago intends to do next with his plans.