Behavior Momentum Theory and Humans: A Review of the Literature.

Behavioral Momentum Theory (BMT) is often described as analogous to Newton's (1687) laws of motion. That is to say, similar to an object in motion continuing in motion unless acted upon by a force, responses occurring in a static environment will continue to occur at the same rate, unless presented with a disruptor (Nevin, Tota, Torquato, & Shull, 359-379, 1990). When evaluating response rates through a behavioral momentum framework, responding continuing after a change in reinforcer conditions is said to persist.

Autism, Insurance, and Discrimination: The Effect of an Autism Diagnosis on Behavior-Analytic Services.

This paper discusses variables contributing to behavior analysis's growth within the autism community and the effect of an autism diagnosis on behavior-analytic services and access to those services. Recent insurance reforms in 47 states, the District of Columbia, and the U.S.

Loss of heterozygosity at 12q14-15 often occurs in stage I soft tissue sarcomas and is associated with MDM2 amplification in tumors at various stages.

Few studies have investigated the loss of heterozygosity and microsatellite instability in soft tissue sarcomas. Therefore, we analyzed samples of human soft tissue sarcomas to determine the status of the chromosomal region 12q14-15, which contains the MDM2 gene encoding the well-known counterpart of the tumor suppressor p53. In addition, we determined whether an amplified MDM2 gene was present in the samples.

Rescattering of ultralow-energy electrons for single ionization of Ne in the tunneling regime.

Electron emission for single ionization of Ne by 25 fs, 1.0 PW/cm(2) laser pulses at 800 nm has been investigated in a kinematically complete experiment using a "reaction microscope." Mapping the complete final state momentum space with high resolution, a distinct local minimum is observed at P(e parallel )=0, where P(e parallel ) is the electron momentum parallel to the laser polarization.

Coincident fragment detection in strong field photoionization and dissociation of H2.

Electron-ion momentum spectroscopy is used to investigate the correlated electronic and nuclear motion in fragmentation of H2 in 4 x 10(14) W/cm(2), 25 fs laser pulses at 795 nm. Reaction channel dependent photoelectron spectra indicate that besides the main, stepwise H2 ionization H2(+) dissociation mechanism resulting in the products H(1s) + H(+) + e(-) a second new mechanism has to be assumed. The momentum distribution of H(+) ions in the dissociation channels H(1s) + H(+) + e(-) and 2H(+) + 2e(-) is found to be independent of the kinetic energy of the photoelectrons.