Answer:
Proactive; Retroactive.
Step-by-step explanation:
As the exercise briefly explains, a proactive interference interacts with pieces of information learned earlier disrupting the recall of information learned more recently, whereas retroactive interference, as it's name suggests, interacts with recently learned information by disrupting the recall of information learned earlier. So, in other words, the proactive interference occurs when past memories keep an individual from having new ones and a retroactive interference does the exact opposite: the new memories keep the individual from retaining old memories.