To Have and Have Not (film) Furthman had completed a revised screenplay with sixty fewer pages. Hawks instructed Furthman, to alter Marie's character to be more sultry and masculine like Marlene Dietrich. In the previous version of the script, Bacall's purse was stolen; after the revision, Bacall's character stole the purse. Much of Bacall's character was based on Hawks's wife Slim Keith. Some of her lines reportedly came directly from Keith. According to Keith, Furthman even suggested she ask for script credit. Hawks instructed Furthman to work on the final screenplay and stop writing the second version of the screenplay. The second version had Bacall as
Sleep and memory actually become worse at the task. The individuals that were allowed a 30-60 minute nap seemed to gain stabilization of the skill as no deterioration occurred. If allowed a 60-90 minute nap (REM sleep and slow-wave sleep), individuals displayed enhancement. Unlike the motor task, enhancement was not suppressed during the nocturnal sleep if the individual had napped earlier. In the situation of visual skill learning, naps have been shown to prevent wakeful deterioration and even enhance learning above and beyond enhancement occurring in nocturnal sleep. Shift workers who work throughout the night have been known to have far more accidents