Latona did an experiment at a military barracks over the space of a few months to examine the effect of group size on group morale. he randomly assigned soldiers to the experimental and control groups and did a pretest and posttest. midway through the experiment, there was an incident in a nearby city involving some soldiers in which the soldiers were visibly mistreated by the community, which affected the morale of both the experimental and control groups. which source of internal invalidity does this example reflect?
a. historyb. maturationc. instrumentationd. selection biasese. compensation

the answer is:

it led to riots and destruction of jewish shops, homes, and synagogues.

it turned german citizens against jews.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.

sir frederic attributed inaccuracies to schemas. memory reconstruction is one part actual events and one part personal schema, which can result in inaccuracies when memories are reconstructed.

answer; permissive;