<P> In the Hall study, the most common emotion experienced in dreams was anxiety . Other emotions included abandonment, anger, fear, joy, and happiness . Negative emotions were much more common than positive ones . </P> <P> The Hall data analysis shows that sexual dreams occur no more than 10% of the time and are more prevalent in young to mid-teens . Another study showed that 8% of both men and women's dreams have sexual content . In some cases, sexual dreams may result in orgasms or nocturnal emissions . These are colloquially known as wet dreams . </P> <P> A small minority of people say that they dream only in black and white . A 2008 study by a researcher at the University of Dundee found that people who were only exposed to black and white television and film in childhood reported dreaming in black and white about 25% of the time . </P> <P> There is evidence that certain medical conditions (normally only neurological conditions) can impact dreams . For instance, some people with synesthesia have never reported entirely black - and - white dreaming, and often have a difficult time imagining the idea of dreaming in only black and white . </P>

Is it more common to dream in black and white
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