Edward B. Titchener defined perception âas a group of sensations to which meaning is added from past experiences.â In contemporary psychology, perception is commonly treated as an intervening variable dependent upon stimulus factor, earning sets, moods, and emotional and motivational conditions of the organism.
Piwakawaka or Fantail. The fantail or Piwakawaka is a small native forest bird with a small head and bill and a long tail which opens to a fan, giving the bird its name. It has a grey head, white eyebrow and white and black band under the chin on the upper chest.Its tail is black and white.The scientific name for fantail is Rhipidura fuliginosa. This well named bird has been able to adapt itself very satisfactorily to an environment that has changed over the centuries.t has a grey head, white eyebrow and white and black band under the chin on the upper chest. Its tail is black and white. The scientific name for fantail is Rhipidura fuliginosa. This well named bird has been able to adapt itself very satisfactorily to an environment that has changed over the centuries.
Red-bellied piranha. The red-bellied piranha, also known as the red pirahna (Pygocentrus nattereri), is a species of piranha native to South America, found in the Amazon River Basin, coastal rivers of northeastern Brazil, and the basins of the Paraguay and ParanÃ¡. They are omnivorous foragers and feed on insects, worms, crustaceans and fish.