How, and under what circumstances would the introduction of &quot;sociological&quot; evidence be allowed in a courtroom? A female founder of a bankrupt healthcare company is being tried for fraud. Her defense team foreshadowed its intention to blame her actions on her former male partner, for things like &quot;domestic abuse&quot; and &quot;domination.&quot; If I were a prosecutor, I would want to rebut this, e.g., by showing full length photos of the woman standing several inches taller than the man. I would want to play recordings of the two people's voices (Elizabeth's voice is deeper, at least her fake voice). I might show comparisons of the popularity of young white women versus middle aged Indian (or Asian) males on such dating apps as Tinder or Instagram to show that the woman was socially dominant. I would also want to have experts comment on the meanings of these matters. To what extent would such &quot;sociological&quot; information (and related expert testimony) be allowed in a California courtroom? Would some items be allowed and some not, all allowed, or none allowed? And how might they be used; would they be mainly in &quot;rebuttal&quot; or in other contexts as well? Edit: My current understanding is as follows: On one hand, the defense can elect to &quot;say nothing&quot; and let the prosecution prove its case, in which case the above would be irrelevant. On the other hand, if the defense puts up an affirmative defense, e.g. &quot;insanity,&quot; the prosecution has a certain latitude in picking apart the proffered defense. So the sociological information could only be used in rebuttal. But suppose the defense team does try to shift the blame in this matter. How much latitude does the prosecution have to use sociological information like the above in rebuttal?
There is virtually no chance this would be admissible. When a defendant argues that abuse at the hands of third party led to a mental defect that excuses her from culpability, the prosecution is free to rebut that argument. However, the prosecution's evidence must be relevant, i.e., it must have a tendency to make a fact of consequence more or less likely to be true. Here, none of the proffered evidence has any real bearing on any fact of consequence: The fact that the defendant is taller than the alleged abuser does not make it less likely that the defendant was abused. The fact that the defendant's &quot;fake&quot; voice (what does that even mean?) is deeper than the alleged abuser's does not make it less likely that the defendant was abused. The fact that young white women have more Tinder matches than middle-aged Indian men does not make it less likely that the defendant was abused. Even if you could find some thin reed on which to hang the relevance of these racial and gender stereotypes, the evidence would likely still be excluded under Rule 403, as the probative value would be so trivial that it would be outweighed by the likelihood of unfair prejudice or misleading the jury.
In a deposition, attorneys are supposed to keep their objections short and refrain from making an objection that indicates to the witness how he should answer. A question might be objectionable because it lacks foundation, because it is compound, because it calls for speculation, etc. Example 2, for instance, could be said to assume that Ms. Redacted was involved, and I might not want my client to discuss how he would act in that situation. Some attorneys in that situation might say, "Objection, assumes that Ms. Redacted had anything to do with this, which you haven't proved, and it's impossible to say what would have happened under circumstances that never happened." This gives my client a pretty clear signal that he ought to make clear that Ms. Redacted wasn't around, and that he should try to avoid getting pinned down on any questions about what he would have done if she had been. This practice -- known as "a speaking objection" -- can be used to signal to the witness how best to answer, and it leads to huge fights in a deposition. To avoid those fights, courts have developed a practice of requiring lawyers to simply "object to the form," rather than coaching the witness. That puts the objection on the record so it isn't waived, and if it's truly problematic, the parties have an opportunity to explain in greater detail after the deposition is concluded.
I'm curious as to how the US legal system determines who should present evidence and how much evidence is required by them to prove one side of an argument against a counterargument. In General In both criminal and civil cases in common law legal systems (legal systems derived from the English legal system, basically, the U.S., U.K., Ireland, Canada, Australia, New Zealand, India, Pakistan and Bangladesh), the burden of proof is on the party seeking to have a court do something. So, if the absence of evidence, the party seeking relief loses. Proof Of The Elements Of The Charge Or Cause Of Action Presentation of Evidence and the Prima Facie Case The party seeking court action presents their evidence first. If at the close of their opening case that party has not presented enough evidence to meet their burden of proof with respect to every "element" of the list of legal elements that they must prove to prevail in court, that party has not established a "prima facie case" and the case is dismissed without granting relief. If the prosecution or party bringing a civil case establishes a prima facie case, or if the defense does ask to have the case dismissed for failing to establish a prima facie case at the close of the evidence of the party asking the court to do something, then the defense presents their evidence if the defense wishes to do so (this is optional). (If the defense does present evidence, the prosecution or civil party seeking relief can then present a rebuttal case to disprove the new points of evidence in the defense case, and so on, back and forth until all evidence is taken.) Evaluating The Evidence In Light Of The Burden Of Proof Once both the party asking the court to do something and the defense have presented all of their evidence, the trier of fact (i.e. the jury in a jury trial, or a judge in a bench trial) decides if every element of the case of the party asking the court to do something has been established by the relevant burden of proof. In a civil case, the burden of proof is usually a "preponderance of the evidence" (i.e. that the evidence more strongly favors that the element was established than that it was not established); some elements on some claims in civil cases must be established by the higher standard of "clear and convincing evidence." In a criminal case, the burden of proof is "proof beyond a reasonable doubt". Affirmative Defenses In addition to elements of a case that must be established to make a prima facie case, there are also "affirmative defenses" to a request that a court do something. Examples of affirmative defenses include self-defense, statute of limitations, immunity from suit, a pardon in a criminal case, etc. A defendant can win ether by showing that the party asking the court to do something has failed to meet their burden of proof with respect to one or more elements of the case, or by showing that an affirmative defense bars the request. In both criminal cases and civil cases, the burden is on the defense to show that there is at least some evidence that justifies consideration of an affirmative defense. This is called a "burden of production." In a civil case (and in some criminal cases in some jurisdictions), the burden of proof is on the defendant to prove an affirmative defense by preponderance of the evidence. In some criminal cases in some jurisdictions, once the defense has met a burden of production with regard to an affirmative defense, the prosecution must rule out the affirmative defense beyond a reasonable doubt to prevail. Deciding Who Wins Once both the party asking the court to do something and the defense have presented all of their evidence, the trier of fact (i.e. the jury in a jury trial, or a judge in a bench trial) decides if an affirmative defenses prohibit the party asking the court to do something from prevailing. The party asking the court to do something wins unless the defense can show that this party did not meet the burden of proof as to any one element of a particular criminal charge or civil cause of action (for each charge or cause of action), or that an affirmative defense bars that particular charge or cause of action. Often cases have conflicting testimony regarding what happened. The jury (or judge in a bench trial) can choose to belief that one person is telling the truth and that the other statement is either a lie or is unintentionally inaccurate for some reason. If the jury (or judge in a bench trial) isn't at all sure whose statement is true and whose is not, this favors the defendant if one is not more credible than the other. Complex Cases In a simple case, there is just one charge or cause of action, and there is just one defendant. But, often, there are multiple charges or causes of action, and each one must be evaluated as to each defendant of the multiple defendants in a single trial. In a civil case, sometimes there are counterclaims that defendants are trying to prove against plaintiffs, or cross-claims that defendants or counterclaim defendants are trying to prove against each other that have to be evaluated. Also, in civil cases, sometimes one or more of the defendants is also prosecuting one or more separate causes of action against someone other than the original plaintiffs or co-defendants. In that case, that defendant is also a third-party plaintiff, and someone other than the original plaintiff and defendants is a third-party defendant (third-party defendants can also bring third-party counterclaims against the third-party plaintiff, third-party crossclaims against third-party codefendants, or their own claims against new parties or against the original plaintiffs). Other Rules Special Statutes Regarding Proof Of Facts Sometimes, there are particular kind of facts for which a statute says that a "prima facie case" is established automatically if a certain kind of evidence is presented. For example, it is common for the law to say that a prima facie case regarding ownership of real estate, or the status of a bus as a school bus, is established by presenting a copy of an official document that says so. Usually, when a statute says something like that, the prima facie case can still be overcome, for example, by presenting a subsequent document that shows that the real estate was then sold to someone else, or that the school bus status of the bus was later revoked. But, when a statute like that is present, the plaintiff or prosecutor doesn't have a duty to prove the negative that there was no subsequent sale of the real estate or that the school bus status certificate was still in force on the date of the incident. Rules of Evidence There are also "rules of evidence" that govern what kind of facts can be presented at a trial to prove a case. For example, in a U.S. criminal trial a fact cannot be established with evidence that is hearsay, such as an affidavit or a statement that a witness heard someone else say and is retelling to the court. A very important rule of evidence in U.S. criminal trials that flows from the United States Constitution, is the evidence obtained by law enforcement illegally may not be presented by the prosecution, even if it definitively shows that a defendant is guilty. This is called the "exclusionary rule." Application To Facts Is it up to the prosecution to present full and complete evidence that the system only takes pictures when the bus is stopped (presumably reviewing source code or conducting tests) or is there some kind of legal concept of "good enough at a glance" evidence where they've met some minimum burden of proof that the picture is taken when the system is turned on and it's only on when the bus is stopped, therefore it must be functioning as expected? The prosecution has to convince the jury (or the judge in a bench trial) that every element of the crime as define in the statute has been proved beyond a reasonable doubt and that any affirmative defense upon which the defense meets a burden of production has been overcome by the relevant burden of proof. Usually, this is a broad legal standard, and the jury (or judge in a bench trial) has to decide if the burden of proof has been met by the facts presented which were legally admissible as evidence. It wouldn't be uncommon for a defendant to present no new evidence in a defense case (other than having cross-examined the prosecution's witnesses) and merely argue at the completion of the prosecution's case that the evidence presented didn't establish a particular element of the prosecution's case beyond a reasonable doubt. For example, the defense might argue that the picture presented by the prosecution was not taken when the bus was at a complete stop, and if the prosecution didn't present some convincing evidence that the bus was at a complete stop when the picture was taken (e.g. the testimony of the bus driver and other witnesses), the defense should win. But, it is almost always up to the jury (or the judge in a bench trial) to decide if the prosecution's evidence is good enough to prove beyond a reasonable doubt that the prosecution proved the case. Often a defendant will not want to call any witnesses beyond the witnesses presented in the prosecution case, because a defendant's witness might cause the jury to overcome its doubt that a fact only weakly proved by the prosecution was actually true, for example, when only one not very credible prosecution witness had testified regarding the same fact. If the identical case were presented to two different juries, one jury could decide to believe the bus driver who said that the bus was at a stop when the picture was taken, and a different jury could decide not to belief the bus driver, and both decisions would be valid. Consequences Of A Verdict If the judge or jury acquits the defendant in a criminal case, the case is over and there is no appeal. If the jury is hung (there is no unanimous ruling to convict or acquit (but see endnote)), in a criminal case, there is a mistrial and the defendant can be tried again. If the jury convicts, one of the grounds for an appeal by the defendant is that the evidence was insufficient to prove some element of the charge beyond a reasonable doubt, and if the appellate court agrees than the conviction is overturned and there can be a retrial (or in some cases, the defendant is acquitted). Appellate Review Of The Sufficiency Of The Proof The law recognizes that different juries could interpret exactly the same facts in different ways and will reverse a conviction because the burden of proof was not met only if "no reasonable jury" could have interpreted the evidence in a manner consistent with a conviction. For example, on appeal, an appellate court will always assume that the jury thought that every pro-defendant witness, whose credibility was questioned in any way by the prosecution, was lying and that the jury believed that every pro-prosecution witness was telling the truth, even if the defense presented evidence that could have caused a reasonable juror to question the truthfulness of a prosecution witness. Appeals for failure to prove something beyond a reasonable doubt can be easier in a bench trial than in a jury trial because following a bench trial the judge will often publicly state the actual reasons in terms of findings of fact and law that the judge used to reach a conclusion. So, the defendant need only show that a key fact actually found by the judge was not supported by the requisite proof. END NOTE Oregon State, and prior to 2019, Louisiana, did not require juries in all criminal cases to be unanimous.
What does one do if, a party at trial denies having made a statement in a published article? A combination of a) and b). The plaintiff should gather other evidence with which to disprove the denials of authorship, or at least to question the reliability the publisher's testimony. The jury needs that evidence in order to discern who is credible. Whether decisive or not for credibility purposes, any material inconsistencies the plaintiff is able to point out from the witness's testimony(-ies) tend to guide the fact-finder (i.e., the jury) on matters of credibility. Whenever possible, the evidence should include admissible documents from when the events took place. For instance, records reflecting the submission &amp; editing process of that article. Those documents typically are obtained by subpoenaing the publisher and/or relevant non-parties, accordingly. That will reduce the chances of testimony deficiencies, whether these stem from witnesses' perjury, lack of memory, inability to clearly articulate what they know, or inability to testify at all (due to witness's illness or death by the time the matter goes to trial).
The standard of proof is "on the balance of probabilities", or, "preponderance of evidence", meaning that your claim must be more probable than the other guy's claim. Rules of evidence may preclude using certain kinds of evidence such as rule 403 The court may exclude relevant evidence if its probative value is substantially outweighed by a danger of one or more of the following: unfair prejudice, confusing the issues, misleading the jury, undue delay, wasting time, or needlessly presenting cumulative evidence A supernatural alternative can, in fact, defeat all forms of evidence, including forensics and "I saw it directly" testimony. The courts do not exclude evidence (all evidence) on the grounds that you can imagine a sci-fi scenario where "it didn't really happen". The rules of evidence more or less encode the cases where evidence is generally found to not be reliable.
In U.S. practice, double jeopardy protections attach once the jury is seated and this scenario contemplates the change in position arising at trial. A mistrial could be called, or a continuance obtained, if the defendant suddenly claimed an alibi defense, since that amounts of a defendant waiver of double jeopardy protections. But without proof that the witness was tampered with, obtained at the last moment, it can be difficult or impossible to get proof of tampering or to contradict the story with other evidence to undermine the credibility of the witness. The prosecution would probably request a recess in the trial to regroup and try to admit evidence that the testimony changing witness made a prior inconsistent statement to impeach the testimony of that witness, from whomever that witness told the first time (probably a law enforcement officer). But this is still far less convincing to a jury than an affirmative statement from a witnesses about a key fact. If the prosecution could find evidence of defense side tampering and present it to the judge in the hours or small number of days before the trial ends, it might be able to get a mistrial declared. But it is much harder to get a mistrial for witness tampering when the witness shows up and testifies contrary to prosecution expectations than it is when the witness is, for example, killed or kidnapped and doesn't appear to testify at trial at all. But if evidence of neither type could be obtained before the jury was sent to deliberate and evidence was closed, and the jury then acquitted the defendant, it would be very hard for the prosecution to change this result. Perhaps not completely impossible, but very nearly so. The witness could be (and in this circumstance, despite the extreme rarity of perjury prosecutions, probably would be) prosecuted for perjury, but that wouldn't change the acquittal. If a link to the defendant could be found, the defendant could also be prosecuted for witness tampering or obstruction of justice or something similar. But that is hard to prove (and the witness would probably have to be convicted or provided with use immunity for his testimony) to do so. In English criminal law practice, in contrast, the likelihood of having the verdict of acquittal set aside and getting a new trial would be much greater (and the likelihood of getting a recess mid-trial would be greater in far more common bench trials in lower level criminal cases), but it would still be a serious burden for the prosecution that it might not be able to overcome. Lawyers aren't entitled to expect that witnesses will testify exactly the way that they discussed things with the lawyers before trial, and this can be explained away with a variety of excuses that are usually true (&quot;after thinking it over after meeting with you, I realized that I was confused and getting it wrong&quot;), but are sometimes a cover for a change of story that is not sincere. I've had similar things happen a few times in civil litigation and there is only so much you can do about it.
I haven't found a recent case like this where it constitutes evidence. Military members didn't have an express right to remain silent until somewhere in the 1950s, so one chances are there might be cases prior to that point. The present right is codified in 10 U.S.C. 831, which is Article 31 of the UCMJ. That said, there is certainly a well documented adverse inference effect. While jurors aren't supposed to take the silence into account (e.g. when a defendant elects not to testify or exercises a right against self-incrimination), it's a difficult thing to do, practically speaking.
Are defendants legally obliged to provide all culpatory evidence to prosecution? The question here is whether or not all evidence requested by prosecution must be provided by the defense? If the defense plans on only using the evidence of the prosecution, does the prosecution get to demand evidence the defense would rather not release? No. Usually only specific kinds of evidence related to specific kinds of claims such as alibi evidence, an insanity claim, or expert testimony must be disclosed prior to trial by a defendant in a criminal case. A defendant in a criminal case does not have to disclose evidence harmful to the defendant's case prior to trial as a general rule. Sometimes there is a requirement to disclose witnesses anticipated to be called, or exhibits to be possibly used very shortly prior to trial, but that is more the exception than the rule. Does the answer depend on the whether or not the case is criminal or civil? Yes. A plaintiff in a civil case can compel disclosure prior to trial of all evidence in the custody, control, or possession of the defendant that is relevant or is reasonably calculated to be relevant to a disputed issue identified in the complaint, answer, and other pleadings (e.g. counterclaims, replies to counterclaims, third-party complaints, cross-claims, etc.). The scope of discovery is slightly different in jurisdictions that don't follow the federal model. This can include pre-trial depositions of the parties, although a defendant can claim the 5th Amendment at the risk of being exposed to an adverse inference communicated to the jury at trial if the defendant does so. Furthermore, most jurisdictions require the pre-trial disclosure of expert testimony that will be used at trial, of exhibits that will or may be used at trial, of witnesses who will or may be called a trial, of all documents that are relevant to a disputed issue identified in the complaint, answer, and other pleadings, of all insurance coverage that could cover the claim, of all persons with knowledge of the disputed facts, and of an expected damages calculation. In the federal system, however, one need pro-actively disclose only witnesses and documents that support your case without being asked. Is there consistency on this or is it at the discretion of the judge? The rules of procedure applicable to a case govern the scope of discovery, but judges have considerable discretion to determine that requests are excessive relative to what is at stake in the case, are irrelevant, or unduly burden some other legitimate interest of the person subject to discovery. Is there punishment for non-compliance? Yes. First of all, a failure to disclose when there is a duty to do so is a ground to exclude presentation of that evidence at trial. Secondly, in civil cases, attorney fees incurred to obtain the discovery can be awarded, facts that might have been disclosed can be declared to be true as a matter of judicial sanction where there is not disclosure, claims can be dismissed, etc. The main relevant federal rule in civil cases is Federal Rule of Civil Procedure 37. It is an unlawful request that must nonetheless be followed with only a hypothetical remedy left to the defendant as is the case in most of these united states to comply with an obviously unlawful arrest that doesn't present an immediate threat to life? I don't understand this long and convoluted sentence. The part about an unlawful arrest seems divorced from the issues in the rest of the the question. It isn't clear what kind of unlawful request is involved either.