4.  The seven sins of memory are the following;
a. Transcience - this is a type of forgetting - your ability to remember events that happened long ago decreases over time.
b. Absentmindedness - this is a type of forgetting - this is caused by lapses in attention, maybe caused by distractions as well - for example, not remembering where you left your sunglasses or your purse.  
c. Blocking - this is a type of forgetting - this happens when a piece of information that you already know is blocked - for example, wanting to say something that's at the tip of your tongue, but for some odd reason, you're experiencing a mental block.
d. Misattribution - this is a type of distortion that happens when you confuse the source of your information - for example, thinking that I told my mother about my goal to attend graduate school, when in reality, it was a dream.  
e.  Suggestibility - this is a type of distortion, false memories that are created by someone - for example, a police officer asking leading questions to uncover a case or crime.  
f. Bias - this is a type of distortion, in which your feelings and view of the world affect your memory of past events.  These biases can be stereotypical, egocentric, or hindsight.  For example, telling my friends that I scored a 100 on the test last year when I really scored 80.   
g.  Persistence - this is a type of intrusion - when we involuntarily remember unwanted memories or something keeps coming to your mind and interferes with your concentration - for example, remembering a traumatic event.