This is our German Shorthaired Pointer, Fritz. He is 2 years old and is the perfect dog for us. Fritz is loyal, obedient, respectful and active! The high point of Fritz's day is the long run we take every afternoon.
Scientists say they may have found the reason why we need to sleep. Photograph: Corbis Scientists in the US claim to have a new explanation for why we sleep: in the hours spent slumbering, a rubbish disposal service swings into action that cleans up waste in the brain. Through a series of experiments on mice, the researchers showed that during sleep, cerebral spinal fluid is pumped around the brain, and flushes out waste products like a biological dishwasher.
Why Twin Studies? Twins provide a valuable source of information for health and psychological research, as their unique relationship allows researchers to pull apart and examine genetic and environmental influences. Twin study findings have been influential in detecting and treating various diseases and psychological disorders. How are they able to do this? Twin studies allow researchers to examine the overall role of genes in the development of a trait or disorder.