Matthew frequently screams when he wants attention from his…

Matthew frequently screams when he wants attention from his mom.  In order to decrease Matthew’s screaming behavior, his mom does not pay attention to him when he screams. When Matthew quietly asks for attention, his behavior is reinforced with attention from his mom.  Which differential reinforcement procedure is Matthew’s mom using?

The intermolecular force(s) responsible for the fact that CH…

The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set is/are _________. CH4,  SiH4,  GeH4,  SnH4 A. hydrogen bonding B. dipole-dipole interactions C. London dispersion forces D. mainly hydrogren bonding but also dipole-dipole interactions E. mainly London-dispersion forces but also dipole-dipole interactions Periodic Table with New Elements-1.pdf